Really, you can't know. Just purchase a computer from a reputable big box store and use the OS Disc to do a reformat (or install Linux, of course).
Posted from that Laptop that Dooglus forgot in that hotel room that one time
In another thread people were talking about BIOS viruses though (which could be added to mobos, and could even be infected by people working at manufacturing plants). Low chance? Certainly. But any possibility should be known about.
Also, I'm guessing you guys are making fun of that line when I post using my phone. I trust the app a bit but let me know if something happens and my account is hij-
Posted from TradeFortress. ALL UR BTC R BELONG TO ME!