Oddly enough when I googled this error its come up with problems ranging from NIC cards to RAM sticks being faulty.

You could try removing all the non-important parts of your machine one by one and starting the machine (i.e. video card, sound card etc).

I'm guessing you've used the old F8 trick to put it in safe mode to check its not your drivers messing?

And silly question really but, are you running XP?