Computer Update

Seeing that my F7 key got away with messing around when it was supposed to be working, my hard drive followed suit. The computer froze up yesterday and restarted with a blinking question mark (meaning no hard drive found). I panicked but it restarted several hours later and appeared to be working fine. Then this morning, it froze again. Now the computer won't even spin the hard drive or show anything at all on the screen. Needless to say, further posts will be spotty until I get this fixed or get a new computer.