Post more dumps if you get them.

Is this a new problem?

Both posted dumps clearly fault the hard drive and my interpretation tends toward a mechanical problem.

ERROR_CODE: (NTSTATUS) 0xc000000e - A device which does not exist was
specified.

DISK_HARDWARE_ERROR: There was error with disk hardware

BugCheck F4, {3, 85fa98d8, 85fa9a4c, 805c773e}

Probably caused by : hardware_disk

Make a new pagefile. The first dump has some memory errors. Instructions (second half of page): http://www.techspot.com/vb/topic51365.html