IRQL_NOT_LESS_OR_EQUAL is a Windows Blue Screen of Death (BSOD) stop error commonly associated with faulty kernel-mode drivers, invalid memory access, memory corruption, or low-level hardware/firmware problems.

The error is normally associated with the bug check:

Bug Check: 0x0000000A

Stop Code: IRQL_NOT_LESS_OR_EQUAL

Microsoft describes Bug Check 0xA as a condition in which Windows or a kernel-mode driver attempts to access paged or invalid memory while operating at an interrupt request level (IRQL) that is too high. The underlying programming problem is often an invalid memory pointer or an attempt to access pageable memory at an inappropriate IRQL.

A typical blue screen may display:

Your device ran into a problem and needs to restart.

Stop code: IRQL_NOT_LESS_OR_EQUAL

The computer then restarts automatically.

Although the message sounds highly technical, the problem can often be traced to a relatively small number of causes, particularly device drivers, RAM instability, BIOS settings, recently installed hardware, security software, or system corruption.

What Does IRQL Mean?

IRQL stands for:

Interrupt Request Level

Windows uses interrupt request levels to prioritize operations being performed by the processor and kernel.

Certain kernel operations execute at elevated IRQL levels. At these levels, Windows cannot safely access some types of pageable memory.

If a driver tries to access an invalid address or pageable memory while executing at an IRQL where that operation is prohibited, Windows may deliberately stop the system to prevent additional corruption.

This produces Bug Check:

0x0000000A – IRQL_NOT_LESS_OR_EQUAL

In other words, the BSOD is usually the result of Windows detecting an unsafe kernel operation, rather than the blue screen itself being the root problem.

Common Symptoms

A computer affected by IRQL_NOT_LESS_OR_EQUAL may experience:

• Sudden blue screens
• Random system restarts
• BSOD during gaming
• Crashes while browsing the internet
• Crashes when connecting USB devices
• BSOD during Windows startup
• BSOD shortly after logging in
• Crashes after waking from Sleep
• BSOD after installing a driver
• Crashes after a Windows update
• BSOD after installing new RAM
• Crashes under heavy CPU/GPU load
• Blue screens while copying large files
• BSOD when Wi-Fi or Ethernet becomes active
• Repeated crashes after installing antivirus, VPN or backup software

The timing of the crash can provide an important clue.

For example, a crash that started immediately after updating the graphics driver should initially be investigated differently from a crash that started after installing additional RAM.

Main Causes of IRQL_NOT_LESS_OR_EQUAL

1. Faulty or Incompatible Device Driver

Device drivers are among the most important causes to investigate.

Microsoft notes that Bug Check 0xA is commonly caused by kernel-mode device drivers using improper memory addresses.

Potentially problematic drivers include:

• Graphics drivers
• Wi-Fi drivers
• Ethernet drivers
• Storage/NVMe drivers
• SATA/RAID drivers
• USB drivers
• Bluetooth drivers
• Audio drivers
• Chipset drivers
• Printer drivers
• Virtualization drivers
• VPN network filter drivers
• Antivirus/security filter drivers
• Backup software drivers

A driver may be outdated, corrupted, incompatible with a Windows build, or simply contain a software defect.

2. Recently Installed or Updated Driver

If the BSOD started immediately after a driver update, the new driver should be considered a strong suspect.

This can occur after:

• Windows Update automatically installs a driver
• NVIDIA/AMD/Intel graphics driver update
• Wi-Fi driver update
• Chipset update
• Printer installation
• VPN software installation
• Antivirus installation
• Storage driver update

Rolling back the affected driver may resolve the problem.

3. Defective or Unstable RAM

Physical memory problems can corrupt data being used by Windows or drivers.

Possible RAM-related causes include:

• Defective RAM module
• Incorrect memory timing
• Unstable XMP/EXPO profile
• Incompatible RAM modules
• Mixed memory kits
• Poor DIMM contact
• Incorrect voltage
• Memory controller instability
• CPU overclock affecting RAM stability

This becomes especially important when crashes are random and different drivers appear in different dump files.

4. XMP, EXPO or Memory Overclocking

A memory profile can technically be supported by the RAM while still being unstable with a particular motherboard or CPU memory controller.

If IRQL_NOT_LESS_OR_EQUAL started after enabling:

• Intel XMP
• AMD EXPO
• Manual RAM timing
• Memory overclocking

temporarily disable the profile and test the computer at standard memory settings.

5. CPU or GPU Overclocking

An unstable overclock can create memory corruption that later causes a kernel driver to fail.

Temporarily return:

• CPU clock
• GPU clock
• RAM frequency
• CPU voltage
• GPU voltage

to their default settings.

Do not assume a previously stable overclock remains stable after a BIOS, driver or Windows update.

6. BIOS/UEFI Problems

Firmware can also contribute to system instability.

Possible situations include:

• Outdated BIOS
• Incorrect BIOS settings
• Aggressive RAM settings
• CPU undervolting
• Firmware bugs
• Incorrect voltage configuration
• Problems following a BIOS update

Microsoft also notes that this type of error may appear after installation of problematic BIOS or low-level software.

7. Antivirus, VPN and Backup Software

Security and backup applications frequently install kernel-level drivers.

Examples include:

• Antivirus filter drivers
• Endpoint security agents
• VPN network drivers
• Firewall drivers
• Disk encryption software
• Backup agents
• Anti-cheat drivers
• System monitoring utilities

Because these components operate at a low level, a defective or incompatible driver can trigger a BSOD.

Microsoft specifically lists virus scanners and backup tools among software that may contribute to Bug Check 0xA, particularly around Windows upgrades.

How to Fix IRQL_NOT_LESS_OR_EQUAL

Troubleshooting should be performed systematically rather than installing random driver updates.

Solution 1: Identify What Changed Before the Error Started

Ask:

What changed immediately before the first BSOD?

Check whether you recently:

• Installed Windows updates
• Installed a new driver
• Updated GPU drivers
• Installed antivirus
• Installed a VPN
• Installed backup software
• Added RAM
• Added an SSD
• Added a graphics card
• Updated BIOS
• Enabled XMP/EXPO
• Overclocked the CPU/GPU
• Installed virtualization software
• Connected a new USB device

If the BSOD started immediately after one of these changes, reverse that change temporarily.

This is often the fastest diagnostic approach.

Solution 2: Update Windows

Open:

Settings → Windows Update

Select:

Check for updates

Install applicable:

• Cumulative updates
• Security updates
• Reliability updates

Restart Windows afterward.

If the problem began immediately after a Windows update, however, investigate driver compatibility before assuming that installing additional updates will fix it.

Solution 3: Update Important Device Drivers

Do not depend exclusively on Device Manager's Search automatically for drivers option.

For critical hardware, check the PC, motherboard or device manufacturer's support site.

Prioritize:

1. Chipset driver
2. Graphics driver
3. Network/Wi-Fi driver
4. Storage/NVMe driver
5. Bluetooth driver
6. Audio driver
7. USB/Thunderbolt driver

For laptops and branded desktops, start with the manufacturer's validated drivers where appropriate.

Examples include systems from Dell, HP, Lenovo, ASUS, Acer and other OEMs.

Solution 4: Roll Back a Recently Updated Driver

If the problem started after updating a driver:

Open:

Device Manager

Right-click the affected device and select:

Properties → Driver → Roll Back Driver

Restart the computer.

Common candidates include:

• Display adapter
• Network adapter
• Wi-Fi adapter
• Storage controller
• Audio device

If Roll Back Driver is unavailable, you may need to uninstall the driver and install a known stable version from the manufacturer.

Solution 5: Check Device Manager

Press:

Windows + X

Select:

Device Manager

Look for:

• Yellow warning icons
• Unknown devices
• Disabled devices
• Recently installed hardware

Pay particular attention to:

Display adapters

Network adapters

Storage controllers

Sound, video and game controllers

Universal Serial Bus controllers

Solution 6: Run Windows Memory Diagnostic

Press:

Windows + R

Enter:

mdsched.exe

Choose:

Restart now and check for problems

Windows will restart and perform a memory test.

If memory errors are detected, investigate the RAM configuration.

However, remember that passing one Windows Memory Diagnostic test does not absolutely prove that RAM is stable under every workload.

For persistent unexplained crashes, extended memory testing may be appropriate.

Solution 7: Test RAM Modules Individually

For desktop computers with multiple RAM modules, technicians can perform a more controlled hardware test.

For example, if the computer has:

2 × 16 GB RAM

test with one module at a time.

Procedure:

1. Shut down Windows.
2. Disconnect AC power.
3. Follow proper electrostatic-discharge precautions.
4. Remove one RAM module.
5. Boot with the remaining module.
6. Test system stability.
7. Repeat using the other module.
8. If necessary, test known-good DIMM slots according to the motherboard documentation.

If crashes occur consistently with one module but not another, the module may be defective.

Solution 8: Disable XMP or EXPO Temporarily

Enter BIOS/UEFI setup.

Locate:

XMP

or

EXPO

Temporarily disable it.

Save settings and restart.

Use the computer normally.

If BSODs disappear, the memory profile or memory-controller configuration may be unstable.

Solution 9: Restore BIOS Defaults

If BIOS settings have been modified, consider loading:

Load Optimized Defaults

or

Load Setup Defaults

Then save and restart.

Before changing BIOS settings, document any configuration that may be required for storage, virtualization, Secure Boot or business applications.

Solution 10: Update BIOS Carefully

Check the computer or motherboard manufacturer's support page.

Compare:

• Current BIOS version
• Available BIOS version
• Release notes
• Supported hardware
• Known fixes

A BIOS update can improve:

• CPU compatibility
• Memory compatibility
• Device stability
• Firmware reliability

However, BIOS updates should not be performed casually.

Important: Never interrupt power during a BIOS update. On business-critical machines, verify the manufacturer's instructions and BitLocker/device-encryption considerations before updating firmware.

Solution 11: Run System File Checker

Open Command Prompt or Terminal as Administrator.

Run:

SFC /scannow

Wait for verification to complete.

If Windows reports corrupted files, restart the system after repairs.

Solution 12: Repair the Windows Component Store Using DISM

Open an elevated Command Prompt and run:

DISM /Online /Cleanup-Image /ScanHealth

Then:

DISM /Online /Cleanup-Image /RestoreHealth

After DISM completes, run:

SFC /scannow

again.

These commands can repair Windows component and system-file corruption, although they will not repair a defective third-party driver or physical RAM failure.

Solution 13: Check Event Viewer

Press:

Windows + R

Enter:

eventvwr.msc

Navigate to:

Windows Logs → System

Look around the exact time of the BSOD for:

• Critical events
• Driver failures
• Hardware errors
• WHEA events
• Disk errors
• Service failures
• BugCheck events

Microsoft recommends reviewing the System log for errors occurring around the time of Bug Check 0xA.

Do not assume that every red Event Viewer entry caused the BSOD. Focus on events immediately preceding the crash and recurring errors that correlate with multiple crashes.

Solution 14: Locate Windows Minidump Files

Windows commonly stores small crash dumps in:

C:\Windows\Minidump\

Files may look similar to:

082826-15468-01.dmp

Windows may also maintain a larger dump at:

C:\Windows\MEMORY.DMP

Crash dump files are one of the most valuable sources of information for repeated BSOD diagnosis. Microsoft notes that bug-check dump files can contain memory-state information useful for understanding a failure.

Solution 15: Analyze the Dump with WinDbg

Advanced users and IT technicians can analyze .dmp files using Microsoft's WinDbg debugger.

A commonly used debugger command is:

!analyze -v

For Bug Check 0xA, Microsoft recommends beginning with !analyze and examining the call stack to help identify the cause.

Useful information may include:

• BugCheck code
• BugCheck parameters
• Faulting module
• Driver name
• Process name
• Stack trace
• Failure bucket
• Memory address
• Instruction pointer

Do not automatically assume that ntoskrnl.exe is defective merely because it appears in a dump.

The Windows kernel is involved in handling the crash, and another driver or corrupted memory may be the actual cause.

Understanding Bug Check 0xA Parameters

Bug Check 0xA contains four parameters.

Conceptually they identify:

Parameter 1: Memory address that could not be accessed

Parameter 2: IRQL at the time of the fault

Parameter 3: Type of operation

Parameter 4: Instruction address that referenced the memory

Microsoft documents Parameter 3 as indicating whether the fault involved reading, writing or, on supported systems, executing memory.

These parameters are particularly useful during WinDbg analysis.

Solution 16: Use Driver Verifier — Advanced Users Only

Windows includes a diagnostic tool called Driver Verifier.

Run:

verifier

Driver Verifier monitors selected kernel-mode drivers for incorrect behavior and can deliberately force a crash when it detects certain violations, making the offending driver easier to diagnose. Microsoft cautions that verification adds overhead, so testing the smallest practical number of drivers is preferable.

Important Warning

Driver Verifier is an advanced diagnostic utility and can intentionally cause additional BSODs.

Do not enable every available verification option indiscriminately on an important production computer.

Before using it:

• Back up important data.
• Ensure you know how to access Safe Mode or Windows Recovery.
• Prefer targeted testing of suspected third-party drivers.
• Avoid experimenting on mission-critical servers without a recovery plan.

To disable/reset Driver Verifier from an elevated Command Prompt:

verifier /reset

Restart Windows afterward.

Solution 17: Boot into Safe Mode

If Windows crashes repeatedly during normal startup, try Safe Mode.

Navigate through Windows Recovery:

Troubleshoot → Advanced options → Startup Settings → Restart

Then select the appropriate Safe Mode option.

If Windows works reliably in Safe Mode but crashes during normal operation, a third-party driver, service or startup component becomes more likely.

Solution 18: Perform a Clean Boot

A clean boot can help isolate third-party software conflicts.

Press:

Windows + R

Enter:

msconfig

Use the Services tab and carefully hide Microsoft services before disabling appropriate third-party services for diagnostic purposes.

Also review startup applications through Task Manager.

If the BSOD disappears, re-enable items systematically until the problematic software is identified.

Solution 19: Temporarily Remove Third-Party Security or VPN Software

If the problem began after installing:

• Antivirus
• Endpoint security
• VPN client
• Third-party firewall
• Backup software
• Disk encryption software

update the product first.

If appropriate for troubleshooting, temporarily uninstall it and test the system.

Simply closing an antivirus application's interface may not stop its kernel driver.

Ensure the system remains appropriately protected while testing.

Solution 20: Disconnect Recently Added Hardware

Temporarily disconnect nonessential hardware such as:

• USB adapters
• Docking stations
• External sound devices
• USB Wi-Fi adapters
• Capture cards
• External storage
• PCIe expansion cards

If the BSOD stops, reconnect devices individually to identify the problematic device or driver.

Microsoft recommends investigating newly added hardware when diagnosing Bug Check 0xA.

Solution 21: Check Storage Health

Although IRQL_NOT_LESS_OR_EQUAL is strongly associated with drivers and invalid memory access, storage problems can indirectly produce corruption or driver instability.

Check:

• SSD health
• NVMe health
• SMART status
• Storage-controller drivers
• File-system integrity

You can run:

chkdsk C: /scan

For hardware health, also use the SSD or computer manufacturer's diagnostic utility where available.

Solution 22: Check for Overheating

Monitor:

• CPU temperature
• GPU temperature
• SSD temperature

Excessive heat can produce general instability.

Inspect:

• Fans
• Heat sinks
• Dust buildup
• Airflow
• Thermal interface condition where servicing is appropriate

However, temperature should be diagnosed from actual sensor readings rather than assuming every BSOD is caused by overheating.

IRQL_NOT_LESS_OR_EQUAL While Gaming

If the error primarily occurs while gaming, prioritize:

1. GPU driver
2. RAM stability
3. XMP/EXPO
4. CPU/GPU overclock
5. GPU temperature
6. Power stability
7. Anti-cheat software
8. Gaming peripheral drivers
9. Audio drivers
10. BIOS/chipset firmware

Try performing a clean installation of the appropriate graphics driver if evidence points toward the GPU software stack.

IRQL_NOT_LESS_OR_EQUAL After RAM Upgrade

If the problem began immediately after adding RAM:

1. Disable XMP/EXPO.
2. Reseat the modules.
3. Verify correct DIMM slots.
4. Test each module individually.
5. Confirm motherboard compatibility.
6. Check BIOS updates for memory compatibility improvements.
7. Avoid mixing unrelated memory kits where possible.
8. Run extended memory testing.

Even two modules with similar advertised specifications are not necessarily guaranteed to operate reliably together.

IRQL_NOT_LESS_OR_EQUAL After Windows Update

If the BSOD began after Windows Update:

Check:

Settings → Windows Update → Update history

Identify recent:

• Quality updates
• Feature updates
• Driver updates

Then determine whether the crash is associated with a particular driver or update.

Avoid immediately removing security updates without evidence. Driver rollback is often a better first investigation when the dump implicates a recently updated device driver.

IRQL_NOT_LESS_OR_EQUAL During Startup

If Windows crashes before reaching the desktop:

Try:

1. Windows Recovery Environment
2. Safe Mode
3. Startup Settings
4. Remove recently installed drivers/software
5. System Restore, if an appropriate restore point exists
6. Hardware diagnostics
7. Memory testing
8. Dump analysis

Repeated startup crashes after installing hardware should also prompt hardware isolation testing.

Difference Between IRQL_NOT_LESS_OR_EQUAL and DRIVER_IRQL_NOT_LESS_OR_EQUAL

These stop messages sound similar but are not necessarily identical bug checks.

IRQL_NOT_LESS_OR_EQUAL

is commonly associated with:

0x0000000A

Another BSOD may appear as:

DRIVER_IRQL_NOT_LESS_OR_EQUAL

The precise bug-check code and dump file should be examined rather than diagnosing the system solely from similar-looking names.

When Should You Suspect Hardware?

Hardware becomes more likely when:

• Windows has been clean-installed and crashes continue
• Different unrelated drivers appear in dump files
• Memory tests report errors
• Crashes occur under heavy load
• XMP/EXPO causes instability
• Individual RAM modules behave differently
• Hardware diagnostics fail
• WHEA hardware errors are present
• Crashes occur across multiple operating-system installations

Possible hardware suspects include:

• RAM
• Motherboard
• CPU memory controller
• GPU
• SSD/NVMe
• Power supply

Hardware replacement should ideally be based on diagnostic evidence rather than guesswork.

Recommended Technician Troubleshooting Order

For professional troubleshooting, use this sequence:

Step 1: Record the stop code and bug-check parameters.

Step 2: Determine what changed before the problem started.

Step 3: Check Event Viewer.

Step 4: Collect minidump files.

Step 5: Analyze dumps using WinDbg.

Step 6: Identify and update/rollback suspected drivers.

Step 7: Test RAM.

Step 8: Disable overclocking and XMP/EXPO.

Step 9: Check BIOS and chipset drivers.

Step 10: Run SFC and DISM.

Step 11: Isolate third-party antivirus/VPN/backup software.

Step 12: Test recently installed hardware.

Step 13: Use Driver Verifier only when necessary and with proper recovery precautions.

This evidence-based process is usually more effective than reinstalling Windows immediately.

Important Commands for IRQL_NOT_LESS_OR_EQUAL Troubleshooting

System File Checker

SFC /scannow

Windows Image Repair

DISM /Online /Cleanup-Image /ScanHealth

DISM /Online /Cleanup-Image /RestoreHealth

Disk Scan

chkdsk C: /scan

Windows Memory Diagnostic

mdsched.exe

Event Viewer

eventvwr.msc

Device Manager

devmgmt.msc

System Configuration

msconfig

Driver Verifier

verifier

Disable Driver Verifier

verifier /reset

Frequently Asked Questions (FAQ)

1. What does IRQL_NOT_LESS_OR_EQUAL mean?

It means Windows detected an invalid memory access while kernel-level code was executing at an interrupt request level where that memory operation was unsafe. Faulty drivers are a common cause.

2. What is the error code for IRQL_NOT_LESS_OR_EQUAL?

The commonly associated bug check is:

0x0000000A

or:

0xA

3. Is IRQL_NOT_LESS_OR_EQUAL a RAM error?

It can be, but not necessarily.

Faulty RAM or unstable memory settings can cause it, but device drivers are also major suspects.

4. Can a graphics driver cause this BSOD?

Yes. Graphics drivers operate in kernel mode and can contribute to BSODs if defective, corrupted or incompatible.

5. Can a Wi-Fi driver cause IRQL_NOT_LESS_OR_EQUAL?

Yes.

Network adapter drivers and filter drivers are worth investigating, particularly when crashes correlate with network activity.

6. Can antivirus software cause this error?

Yes. Antivirus and endpoint-security software may install kernel-level drivers. Microsoft specifically identifies virus scanners among possible compatibility-related contributors to Bug Check 0xA.

7. Can a VPN cause IRQL_NOT_LESS_OR_EQUAL?

Potentially. VPN clients frequently install virtual adapters and network filter drivers that interact with the Windows networking stack.

8. Can XMP cause IRQL_NOT_LESS_OR_EQUAL?

Yes. An unstable memory profile can produce memory corruption that eventually manifests as a BSOD.

Temporarily disabling XMP or EXPO is a useful diagnostic test.

9. Should I reinstall Windows immediately?

Usually not.

First investigate drivers, dump files, RAM, BIOS settings and recently installed software/hardware.

A clean Windows installation will not repair defective RAM or other faulty hardware.

10. Where are Windows BSOD dump files stored?

Small dumps are commonly stored in:

C:\Windows\Minidump\

A larger dump may be stored at:

C:\Windows\MEMORY.DMP

11. How do I know which driver caused the crash?

Analyze the crash dump with a debugger such as WinDbg.

The dump can reveal the faulting module, stack information and other diagnostic data. Microsoft recommends stack/dump analysis for Bug Check 0xA.

12. Why does ntoskrnl.exe appear in my BSOD report?

ntoskrnl.exe is the Windows NT kernel.

Its presence does not automatically mean the Windows kernel itself is defective. A third-party driver, hardware instability or memory corruption may cause the kernel to detect and process the crash.

13. Does SFC /scannow fix IRQL_NOT_LESS_OR_EQUAL?

It can help if damaged Windows system files contribute to the problem.

It will not repair defective RAM or fix every faulty third-party driver.

14. Does DISM fix this BSOD?

DISM can repair the Windows component store and is useful when operating-system corruption is suspected.

It does not directly repair faulty hardware.

15. Should I use Driver Verifier?

Driver Verifier can be useful for advanced troubleshooting, but it should be used carefully because it intentionally stresses drivers and can cause additional crashes when violations are detected.

16. How do I turn off Driver Verifier?

Open Command Prompt as Administrator and run:

verifier /reset

Then restart Windows.

17. Can BIOS cause IRQL_NOT_LESS_OR_EQUAL?

Yes. Firmware bugs, unstable BIOS settings or memory configuration can contribute to low-level instability.

18. Can overheating cause this error?

Overheating can cause general instability, although it is not the primary meaning of Bug Check 0xA. Check actual temperatures if crashes occur under sustained load.

19. Can a faulty SSD cause IRQL_NOT_LESS_OR_EQUAL?

It is less directly associated than a driver or memory problem, but storage/controller failures can contribute to corruption and system instability.

20. Why does the BSOD happen randomly?

A driver may access invalid memory only under a particular workload, or memory corruption may occur earlier and become visible later.

That is why minidump analysis is especially valuable for apparently random crashes.

21. Can Windows Update cause the problem?

A Windows update can expose compatibility problems with an existing driver or install a newer driver that behaves differently. Check update history and crash timing before removing updates.

22. Should I update every driver?

No.

Prioritize drivers related to the evidence in the dump or recently changed hardware. Microsoft also recommends keeping Driver Verifier testing focused because driver verification itself adds overhead.

23. Is IRQL_NOT_LESS_OR_EQUAL a virus?

The stop code itself does not indicate a virus infection.

It is primarily a kernel memory-access failure. Malware is possible in a general troubleshooting context, but should not be assumed from this stop code alone.

24. Can new RAM cause the problem even if the RAM is not defective?

Yes.

The modules may be functional individually but unstable because of frequency, timings, voltage, motherboard compatibility, mixed kits or CPU memory-controller limitations.

25. What is the best way to permanently fix IRQL_NOT_LESS_OR_EQUAL?

There is no single universal fix.

The permanent solution is to identify the actual cause—commonly a faulty driver, unstable RAM configuration, defective hardware, incompatible low-level software or firmware issue—and correct that specific problem.

Final Technical Summary

IRQL_NOT_LESS_OR_EQUAL (Bug Check 0x0000000A) is a Windows kernel-level stop error indicating that Windows or kernel-mode code attempted an invalid memory operation while running at an elevated interrupt request level. Microsoft identifies improper memory addresses used by kernel-mode drivers as a common cause.

For effective troubleshooting, focus first on:

Drivers → Crash Dumps → RAM → XMP/EXPO/Overclocking → BIOS/Chipset → Security/VPN Software → Hardware

Do not assume that reinstalling Windows is automatically the solution.

For repeated BSODs, preserving and analyzing files from:

C:\Windows\Minidump\

is one of the most useful diagnostic steps because it can help move troubleshooting from guessing to identifying the driver, subsystem or hardware condition involved.

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