BSOD re Page Fault and Drive Power State Failure

Lately my 1.5 year old ASUS CM6870 Desktop running Win8.1 started to give me the BSOD with the following two error messages: Page Fault in Non_Page Area; and Drive Power State Failure. Occasionally I will get the sudden BSOD and this B stands for Black with no cursor or message showing. In about 10 seconds the monitor will display a message saying it is going into inactive mode. I pressed the desktop power button, the system just shut down. Two days ago at log off Windows was doing update and at 30%, everything was frozen. Left it on the whole night, same screen the next morning. Need to depress the power button to shut down the system although Windows said I can't shut down the PC while it's doing an update. That's about the symptoms I can recap for now. Zip file attached as instructed. Thanks.

There is no dump file. Please check your minidump folder for it. When you find it, upload it. If you are using CCleaner, please strop as it deletes minidumps.