BSOD when computer left on overnight

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All your BSODs are caused due to McAfee.

Code:

BugCheck D1, {0, 2, 1, fffff88005b96b70}
*** WARNING: Unable to verify timestamp for mfefirek.sys
*** ERROR: Module load completed but symbols could not be loaded for mfefirek.sys
Probably caused by : mfefirek.sys ( mfefirek+57b70 )
========================================================
BugCheck D1, {0, 2, 1, fffff88005f44b70}
*** WARNING: Unable to verify timestamp for mfefirek.sys
*** ERROR: Module load completed but symbols could not be loaded for mfefirek.sys
Probably caused by : mfefirek.sys ( mfefirek+57b70 )
========================================================
BugCheck D1, {0, 2, 1, fffff88005bb2b70}
*** WARNING: Unable to verify timestamp for mfefirek.sys
*** ERROR: Module load completed but symbols could not be loaded for mfefirek.sys
Probably caused by : mfefirek.sys ( mfefirek+57b70 )
========================================================
BugCheck D1, {0, 2, 1, fffff880057c5b70}
*** WARNING: Unable to verify timestamp for mfefirek.sys
*** ERROR: Module load completed but symbols could not be loaded for mfefirek.sys
Probably caused by : mfefirek.sys ( mfefirek+57b70 )
========================================================
BugCheck D1, {0, 2, 1, fffff88005da7b70}
*** WARNING: Unable to verify timestamp for mfefirek.sys
*** ERROR: Module load completed but symbols could not be loaded for mfefirek.sys
*** WARNING: Unable to verify timestamp for win32k.sys
*** ERROR: Module load completed but symbols could not be loaded for win32k.sys
Probably caused by : mfefirek.sys ( mfefirek+57b70 )

I know you may come back saying "I used it all these years with no problems, it could be something else" but that's not exactly what it is. I would not suggest you on purchasing a newer version of that antivirus. It's a frequent cause of BSODs and to me is not a reliable AV. If you want I'll be happy to link you to threads that were fixed by just removing McAfee.

Please uninstall it using its removal tool:

• McAfee Removal Tool - McAfee Uninstaller

Replace with free, light weight and trouble free AV - Microsoft Security Essentials.

It's the recommended antivirus program for Windows 7 based on stability compared to others:-

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

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

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

Let us know the results and further BSODs if any

Good luck