Free Download Iastor.sys

I have some Tyan's (actually they're the same as yours) with iastor.sys issues. Memory leak in the driver killing the non-paged pool. Try removing the Intel Matrix Storage Manager and see if that fixes your issue. It did for me.

File: \Windows\system32\DRIVERS\iastor.sys Status: 0xc000035a Info: Windows

failed to load because a critical system driver is missing, or corrupt.