I hate to open back up this thread but I feel like creating a new one for the same problem is just a mess.

I am having the EXACT same problem again and I know it isn't viruses (I did a full scan with my rescue disk in a mini linux OS)

This is after I have clean installed windows 7 and transferred all my important data. The only difference is that I can get into Safe Mode this time.

I was wonder what causes problems like these, because I am beginning to think it is bad hardware. Could a Hard Drive that is going bad cause these problems?

(I quick scanned it with WD Lifeguard tool a day before it started doing the black screen with the cursor again, and it said that it passed, but I didn't have enough time to do a full run.)