what does bsod code 0x1000007e mean

pwl2706

Reputable
Feb 16, 2015
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4,510
Hi,

Over the weekend on a Windows XP machine we had a system scrash with the below bugcheck message:

The bugcheck was: 0x1000007e (0xc0000005, 0xb954203c, 0xb8522bb0, 0xb85228ac)

Has anyone any ideas what could definitively cause this?

thanks
 
bugcheck 0x1000007e = SYSTEM_THREAD_EXCEPTION_NOT_HANDLED_M
but the actual error returned was 0xc0000005
Error code: (NTSTATUS) 0xc0000005 (3221225477) - The instruction at 0x%p referenced memory at 0x%p. The memory could not be %s.

Basically a bad address was passed to a driver.

normally, you would update the drivers, scan for malware, do a sfc.exe /scannow to look for corrupted OS files,
do a chkdsk to look for file system corruptions. Update the BIOS or reset it to defaults and run memtest86 to check for hardware problems with your memory or BIOS memory timings.