No hard drive detected

I have been battling the 'blue screen of death' since I purchased this computer last year. Nothing but headaches! I sent the computer into Dell to get fixed but the blue screen appeared shortly after they returned the laptop to me. It popped up AGAIN tonight and I don't understand what could be the problem.

The blue screen said there was a "KERNEL_DATA_INPAGE_ERROR"

There is no new hardware installed on my computer. I haven't even put all my info on here from my backup drive.