Hi i have this weird problem with my GPU it satrted yesterday i closed my laptop (Acer Aspire 8930) when i came back and opened it to turn it on it had powered off it was plugged in so i though somthing was up anyways i powered it up and it had reverted back to the generic gpu so i though my GPU driver had crashed. So i went to nivida to get the lastest driver proceeded to try to install it when i tyred it said it couldnt find compatable hardware so then i though my GPU was dead. I then tryed a restart to see if anything would change and it did my GPU was bback in action so its not dead. But now any time i close my laptop it will not sleep it hibernates and the same thing happens all the time and somtimes when i try to restart it will hang after closing windows i have to hit the power button to kill it. I tryed a system restore as i had installed some software this did not help. Im baffaled as to what the problem is any help would be greatly appreciated.