Gremlin in W7 SP1
Solution 1:
Error (0xc0000005) is often associated with hardware errors (Machine OK and then this error continues with reinstall of Windows).
The error also comes up for addressing errors and defective RAM could cause this.
I suggest getting the machine manufacturer's Hardware Test App and testing all the hardware. If there are hardware errors, it is likely time for a new computer.
Windows 7 Error c0000005
Thanks for posting. The error code often means there is something physically wrong with the hard drive or RAM. If possible check with the OEM of your computer to see if there is a diagnostics for your hard drive.