i've stucked with this problem a long time now, and it goes like this: when i install OS and configure it (drivers and stuff), the whole thing works just fine and smooth, even after rebooting, but then, when i turn off the comp, and turn it on again, especially after letting it stay turned off for a while, a very strange things starts to happen. I've tried to install XP Pro and 98SE, but the same thing happens. Now, the problems are, among other, that: - win reeboots for a few times, check disk, fix some errors if it founds it, and places some files in the FOUNDxx dir. Then Win starts and work just fine... - memmory 'could not been read' or 'written' (at logon screen),then restarts - enter win and then suddenly restarts (after a few seconds) - do not let me to log on with existing user account, blocks it and creates another one and things like that. The point is that it starts to work fine, after this strange crashes. I can't figure it out, can anyone PLEEEASEEE help me? Thanx in advance.