KERNEL_DATA_INPAGE_ERROR

http://answers.microsoft.com/en-us/windows/forum/windows_7-system/kerneldatainpageerror-every-few-days/650474dd-46e2-42c1-b74b-21413fbaad55
The error code KERNEL_DATA_INPAGE_ERROR STOP: 0x0000007A states that the requested page of kernel data from the paging file could not be read into memory. It appears that there are some issues with the hard disk.

Method 1: I would suggest you to try the steps provided below and check if it helps.

a)       Click on Start, type Command Prompt, right click on it and select to run as administrator.
b)       In command prompt, type chkdsk X: /f /r and hit enter to check and repair any volume disk errors or bad sectors present on the drive X which would be causing this problem.

Refer to “Check a drive for errors” http://windows.microsoft.com/en-US/windows7/Check-a-drive-for-errors

Important: While performing chkdsk on the hard drive if any bad sectors are found on the hard drive when chkdsk tries to repair that sector if any data available on that might be lost.

Method 2: Also I would suggest you to try the steps from the link below which would help you to resolving, stop (blue screen) errors in Windows 7.
http://windows.microsoft.com/en-us/windows7/Resolving-stop-blue-screen-errors-in-Windows-7