I'm having trouble with a Sony laptop.
When I try to power it up, I hear something powering up but the screen remains black. On rare occasions, it will actually boot up but will freeze up a few minutes later.
Took it to CompUsa for repair. Here is what they did verbatim from invoice:
"Looked at system. It would boot up but lock going into Windows in regular and safe mode. After to trying to boot several times the system finally started doing the no post/no video systems. Removed all power and reset system-same issue. Removed drives and battery-same issue. Removed memory-same issue. Reinstalled memory (in opposite slots as originally configured) and the system booted up into safe mode.
Ran a full scandisk on the C partition-ok. Currently running on D partition. Scandisk on D completed without error. Restarted system and was able to boot to Windows without issue. No video artifacting that we had seen at one point previously."

I brought it home. It worked fine for about an hour (which was an improvement at that point) but then it freezed up like it had before.
I then had the same problems I had before I brought it in for repairs.

Any thoughts?