Before I was having installation problems LIKE I have posted previously, but now when I turn on my computer, after like a MINUTE, the cursor freezes and you can't move the mouse.  Then, the computer automatically shuts itself off.  I last scanned for viruses with Norton AntiVirus 2004 on 1/1/05.  Can anyone tell me why this is happening?  How can I fix it?What program were you having a hard time installing?

[glb]Flame[/glb]Gonna need some info like is the system old or new?  What Operating System are you RUNNING?  Have you scanned for spy/adware?  Did you recently install new hard/software?

Try reseating all your parts.. ram, video card, etc.do you recieve any  on screen messages?? thirty seconds this pc will shut down??re-boot pc hold down the f8 key safe mode>> now type chdisk /f in the run box..or chose last good config.......the symptoms you state indicate a graphic card problem??does the num lock on the keyboard stay on?if this is winxp it will shutdown if it comes across a problem when loading??* CHKDSK /f