Hello just read the Try This First post and downloaded the binary boot of Memtest. I take it I should run it at night since it takes a long time ? I surmise I can figure how to analyze the results and-or post them up in this thread tomorrow if I can't understand what to make of it. I have a Gateway Laptop that I bought in 2005 that has run flawless for 6yrs now. I don't treat it rough but sometimes do use it quite a bit. Within the past 2 weeks I started having blue screens and serious system err recovery messages on boot. I ran chkdsk after each occurance (on both the main C drive and the formatted 2nd data partition). And the problem would not return for say a day or so. Additionally I ran full virus checks with Norton and SuperAntiSpyware, and only found tracking cookies which were deleted. But I kept having about 5 or 6 occurances of the blue screen in the past week and a half. I ran chkdsk on boot about 3 days ago and I have not had a problem since. One other thing, most times right before the system crash I noticed some failure to repaint the current screen properly and some tracks would be left on the screen. Anyhow I will run Memtest tonight, I was thinking either memory or the hard drive is failing ?