Although its very possible a virus is the problem, I have also ran into this problem with a newly formatted laptop. Basically I can run bitlord for a few days, then all the sudden it pops up the blue screen stating an issue with atapi.sys file, then proceeds to shutdown and restart. This only happens on the laptop, my desktop has never ran into this problem and I run basically the same programs on both computers. If anyone has any insight into this it would be greatly appreciated.