My computer has recently developed a major problem and its driving me mad. When i start my computer and log in, the compter acts normally and begins to load windows/various other programs but then suddenly freezes and won't do anything. Nothing works - ctrl-alt-delete won't do anything and my computer simply won't respond.
Sometimes I can log in before it freezes and other times it freezes on the log-in screen. I can successfully run Safe Mode and everything is fine - I've ran virus software and found nothing. I also opened the computer up and cleaned out all the dust, both fans are working fine.
I added a new USB wireless adapter recently, but haven't had any problems at all with it, the last time i successfully used the computer nothing unusual happened, and nor did i install any new software/programs or anything.
My computer is an Acer Aspire SA-80
Windows XP Home Edition SP2
Intel Celeron D 336 Processor
SIS 661FX/GX Mirage Graphics Card
I haven't changed any hardware on my computer since i bought it about a year and a half ago, nor have i had any other problems with it.
Can anyone help me please?