All right, first of all, really sorry to be another one of those 1st post 'please-help-me' people! I've been following these boards for quite a while and now this problem has come up.
Often times my computer will randomly reboot. Sometimes I'll restart the computer myself (e.g. after a software install). What happens is the black screen comes up and my processor is recognized, but it freezes during the memory test. I can't hit ESC to skip it, and I can't hit DEL to get into the BIOS. I can't run memcheck86, because I can't press F11 get to the boot options. I've got a stick of 512 mb 184-pin PC3200 RAM made by Rosewill, and suspecting that was the issue I swapped in a stick of 256 mb samsung pc2700 ram. It ran fine for a while. Then I restarted, and bam, frozen on the memory test yet again. Furthermore, the Rosewill 512 RAM worked fine in another computer. What could it possibly be?
It just stops on this screen. Sometimes it'll display the text "Memory testi" or some partial variant of "Memory testing: 5262402k complete" or whatever it usually says.