Bluescreen BCCode:7a

Welcome to SevenForums.

STOP 0x0000007A: KERNEL_DATA_INPAGE_ERROR
Usual causes: Memory, Paging file corruption, File system, Hard drive, Cabling, Virus infection, Improperly seated cards, BIOS, Bad motherboard, Missing Service Pack

The antivirus you are currently using is known to cause BSOD crashes, consider uninstalling it with the McAfee Removal Tool and replace with Microsoft Security Essentials at least to test.

• McAfee Removal Tool - McAfee Uninstaller

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.

Run this tool and delete anything it finds:

• Anti-rootkit utility TDSSKiller

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

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

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

Let us know the results.

You're welcome.

Do perform SFC scannow. It's good to make sure none of the files of windows is corrupted, and if they are, it should attempt to repair those.

Good luck and let us know how it goes.

Bugcheck F4 is usually hard drive/storage related.

Upload a screenshot of your hard disk using crystal disk info:

• CrystalDiskInfo - Software - Crystal Dew World
• Screenshots and Files - Upload and Post in Seven Forums

Test your hard drive:

Hard drive test both short and long with:

• SeaTools for Windows

Also the DOS version of:

• SeaTools for DOS and a Guide SeaTools for DOS tutorial

Please back up all your important things from the hard drive. From the snips it looks like it's a failing hard drive.

Proceed with Seatools for DOS for a confirmation and let us know the results.