Desktop shutdown due to error that would damage the system. Can't get computer back up.

I tried to DISABLE BIOS Memory caching & shadowing, as mentioned on the screen.  This appeared on the screen.

 Error: driver_IRQL_NOT_LESS_OR_EQUAL. Below Tech Info: 

Then the screen read:

Tech Info:

...STOP: 0x000000D1 (0x00000018,0x00000002,0x00000000,0xB9E4525f)...iastor.sys-address B9E4525F base at B9E36000, date stamp, 42b2df42

Anyone have this problem?