It shows to push F2 to enter bios, but it just goes ahead and loads XP (Home). Can push and release F2, or hold it down during post to the point of warning beeps, still the same result. I'm wanting to run Memtest. The computer was not performing well with two 512 MB sticks of memory. Added two 1gb sticks and it is doing better, but still wonder about the original memory if it has a problem. But I can't get there to run it. Any advice would be appreciated. Yes, I know it needs to be replaced, but it's the wife's computer and she doesn't want to change it out because of the hassle it will be to move all her files over to Win 7 Pro. Thanks for your help! Jim.