Never seen this problem before, If i do run "cmd", nothing, the dos box sits there with the blinking cursor. I cant type in it and have to shut it off. Yet, if i do run "command" it works fine???? All my specs are in my profile. The hard drive has suffered data damage in the past due to being cooked in an extenal enclosure but i keep an eye on it. Its no longer in an external box, its inside my pc now. Speedfan reports no errors on the drive via s.m.a.r.t.