after formating the hdd running win98 on an old celeron machine (for office use), i reinstalled win98. after that i also installed office 2000 pro and norton systemworks. when running excel or quickbooks (accounting software) or any other software that could push the celeron to some extent, the computer locks up after some time of usage (a few minutes). the mouse moves but other than that the pc seems to have hanged. ctrl-alt-del doesn't work so the reset button is the only solution to restart. i don't think the problem is heat related because it worked without lock-ups before i formatted it. any suggestions to remedy this problem would be greatly appreciated. celeron 300 32mb ram s3 savage vid card stock psu (wattage not sure)

That isn't pushing the Celeron but it sure is pushing the 32mb of RAM.

Uninstall Norton SnakeOil, sorry, SystemWorks.