Why would windows randomly restart?

[Pepsiboy700]

Ok my computer took a crap a couple days ago when my aunt spilled beer on my motherboard when putting ram in and the motherboard fried. I went and got another one and thought I might have to reinstall windows but I didnt have to. After a couple of hours my computer started to randomly reboot and would even get past windows loading screen and/or login for windows. I wipped my drive and forgot I didnt have a xp cd handy. I then tried a dvd of windows and that didnt work because of issues/errors and restarts but I figured just cause it was a pirated version. I finally got a xp pro Legit copy free from a friend that was one of the origonal versions to come out before sp1 and 2 from 2001. I installed and already I was getting errors in terms of updates and installs. Anyone have any ideas? My system is a p4 2.8ghz with ht tech and 800mhz fsb. 1gb ram 2x512mb sticks pc3200. ati radeon 9600xt 128mb. I have a 120gb hd i just got that installed xp on and a 60gb hd I have had which has stuff on it that seemed to be infected but I deleted what macafee said was infected and all seems fine. Once again anyone tell me what to try to fix this and if it means my system is wrecked?

 

[SHAWN]

What kind of errors are you receiving when you get updates? Is that your only issue?

 

[Pepsiboy700]

No, everything. I mean i get win32 errors and everything. Just running stuff kills the pc in terms of errors and then restarts. A person said it could be my hd which is a maxtor.

 

[SHAWN]

Go to www.maxtor.com and run their hard drive diag tool. That will tell you.

 

[Osiris]

dd you replace it with the same exact mobo?

 

[EricB]

we need to know the exact error