Blue Screen of Death and Freezes...after reformatting hard drive

[Kaa]

Good Evening,

So I'm running Project 1999 on an HP Elitebook 2540p laptop with Windows 7 Pro, 64 bit.

I write because despite reformatting my hard drive and checking that my memory sticks match in speed, and even moving my hard drive into a different Elitebook 2540p I had around, I'm continuing to have the blue screen of death on occasion while playing, as well as freezes (basically equivalent to the Blue Screen since I have to turn off the computer, it doesn't 'unfreeze').

I'm wondering at this point what the problem might be. Is this a common issue?

Thanks