I originally only ran with the 1 RAM stick, I added the 2nd one at 2 or 3 months.
I ran with the on-board graphics until I got the 5770 a month after the 2nd RAM stick. I tried my brother's MSI GTX650 (I think that's what it was), it didn't make a difference.
I built the computer in May of 2011, the problems have been there the whole time.
Yes, I originally had Win 7 Ultimate, then I went to Win 7 HP, I've reinstalled that twice.
I have also had two different HDDs, the first on was 5400rpm, the 2nd 7200rpm, both the same general model.
Thanks for your quick reply.