Hi, I have a very frustrating problem with my computer. It freezes randomly and I cannot find why its happening... Sometimes it happens while playing a game, sometimes while surfing on the net, sometimes while using word and the worst case is it happens randomly during fresh install... I formatted hdd and tried to install XP again but succeeded after 3rd or 4th try... it was luck i believe... -I dont see any blue screen of death or anything, it just freezes and only solution is "reset". -I have Asus P4M890-M7 TE Mainboard and updated Bios just recently. -I thought it was ram at first and changed rams with a ram i used on another computer for a year without any problem but it didnt work for this computer. -I've read many topics about this problem and changed PSU but it didnt help either. -After lock up I check CPU Temperature in Bios and I see its around 30C... -I installed latest drivers for everything but the computer freezes while installing XP from 0 so I don't think its about drivers... -Ethernet card and sound card are on board... Please someone help... Computer specs... Asus P4M89-M7B Intel Pentium Dual Core E2180 SAPPHIRE Radeon X1550 Series 2 Gb DDR2 667 Mhz 250Gb HDD Windows XP Pro SP2

Did the freezing occur BEFORE you updated the Bios ? If you were not having any problems, it probably would have been bettter NOT to update the Bios.

It was occuring before Bios Update. I updated Bios to see that if it works but didnt help.

What were the specs on the psu before and after you changed it ?

Firstly, I'm sorry for not answering quickly because this computer is used at work and I wasnt available until now. before ( and now) : quake 300w ( max output says 307W ) +3.3V (14A) +5V (10A) +12V(16A) =288W -12V (0.8A) = 9.6W +5V SB (2A) = 10W after : asus 350w ( well its not here anymore, i put old one back because i didnt see any difference... )

I have the same problem! However i have changed every component in my computer - except the hard drives, so my guess it would be those. I have two hard drives, and have tried them separately, with windows installed on both of them - the lockup still happens. I think it is weird if both my harddrives are faulty, but i might just be too optimistic. The other solution would be software related, but since it happens so randomly, this would be unlikely as well.. my guess is the hard drives but i cannot afford new ones right now, so havent gotten to try it. have you tried changing hard drives?

No... I'll try it if I can, thank you for warning me about it.