Jliecty, I know bro! I want to use the latest the greatest, otherwise I won't go to buy the XP.
Windows 2000 and (afaik) XP can be installed in a way that they do not use ACPI. Anyway, I can't imagine trying to do some professional video editing (I'd assume that's what someone would use a Matrox RT2500 for) on a DOS-based OS. It would simply be too prone to crash with lots of resource utilization with big video files (and btw, you do know, right, that a FAT32 partition limits you to 2GB per file? what about those long uncompressed videos?).
Already tried installing XP as "standard pc" but won't help.
Something is messed up, then because a normal WinXP system won't do that (unless you mean leaving warnings in the event log, which both of my WinXP systems do). Even my one system which has a 4.3GB disk (with a 3GB partition for WinXP, 70% full) doesn't complain about being out of space.
the alert messsage is not from the event viewer, xp alerts me with the windows says that c drive is running out of space, you need to do compression, remove some files/apps etc.
if i can get the RT2500 on windows xp with 7VRXP mb there is no way i would go back to 98/me