Windows 7 - BSOD 0x000000d1 IRQL NOT LESS OR EQUAL at Random moments

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Code:

Start Menu\Programs\avast! Free Antivirus	Public:Start Menu\Programs\avast! Free Antivirus	Public

Avast antivirus can sometimes contribute in BSOD-s. Please remove it and replace with Microsoft Security Essentials (To test).

• avast! Uninstall Utility | Download aswClear for avast! Removal

Recommended antivirus program for Windows 7 based on stability compared to others:-

• Microsoft Security Essentials - Free Antivirus for Windows
• Microsoft Security Essentials Download | Free Spyware Protection
• Malwarebytes - The Free version
• Good and Free system security combination.

Do not start the free trial of Malware Bytes; remember to deselect that option when prompted.

Run a full scan with both (separately) once downloaded, installed and updated.

Update drivers for NETwNs64.sys Intel(R) Wireless WiFi Link 5000 Series Adapter Driver for Windows 7 from Intel Download Center

Daemon Tools:-

Please uninstall DAEMON Tools. It uses a driver called sptd.sys which is known to cause BSODs in Windows 7. Uninstall the software using Add/Remove Programs. Reboot the system. Once the program is uninstalled, run sptd.sys uninstaller to remove the driver from your system.

As an alternative, many people recommend the use of Total Mounter or Magic ISO

Free up the start-up, nothing except the antivirus is usually needed.

• Startup Programs - Change
• Troubleshoot Application Conflicts by Performing a Clean Startup

Run the System File Checker that scans the of all protected Windows 7 system files and replaces incorrect corrupted, changed/modified, or damaged versions with the correct versions if possible:

• SFC /SCANNOW Command - System File Checker

Run Disk Check on your hard disk for file system errors and bad sectors on it:

• Disk Check

Hope this helps for now.

Code:

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*                        Bugcheck Analysis                                    *
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Use !analyze -v to get detailed debugging information.

BugCheck D1, {2c, 2, 1, fffff880092d3bfe}

*** WARNING: Unable to verify timestamp for NETwNs64.sys
*** ERROR: Module load completed but symbols could not be loaded for NETwNs64.sys
Probably caused by : NETwNs64.sys ( NETwNs64+21abfe )

Followup: MachineOwner
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Thanks for the update.
Let us know how it went, good luck.

Any BSOD-s over the week? :)

Great, let us know if there are any other problems.

Happy computing :)