Computer won't come out of 'hibernation'
Please bear with me; I'm having to post from my (beloved) iPod.
The computer (Dell w/windows 7) has put itself into hibernation and won't wake up. We never use hibernation or sleep mode. It's either "on" and being used, or it's off.
Neighbor tried changing the battery. Then he thought it was the power source. It came on for a few seconds and then was out again. I took it to Best Buy (70 miles round trip). They hooked it up and it was humming along fine. He suggested I get a new power cord and plug it directly into the wall, not the power strip.
I trudge home; put on the new power cord; plug everything in; turn it on and it works great for 20 minutes. Then it wants me to do a system restore. I do; and it's once again hibernating and won't wake up.
Can you suggest anything?
I've read it could be a bad "device driver," or a bad USB Port, or a power supply????