Hi again, Tried to put in Windows 10 64 bit and it stopped with a warning "compareExchange128". Its my harddrive. Not sure why its a sata1 250 gig. 7200rpm. Seagate Barracuda. Is there a program i can use to see if it is really my hard drive going bad or something else? That drive is only 2 years old! Wouldn't think it would go bad that quick. My backup drive is 5 years old same drive specs but a ide type. Any ideas or have you ever seen the error i got? I redid my computer index on it and it came up with index number of 58. Program compatibility said no problems with windows 10 install.