I have a Compaq C60-420US.
The OS was Win7 on an OEM install which worked fine. I could close the lid of the laptop and when opened, the OS would resume normal operation.
I upgraded the OS to Win8.
Since the upgrade, when I close the PC top and then open it, I cannot get the computer to respond. The drive shows activity, the DVD sounds like it goes active for a moment but the screen remains black. If I press the on/off button it begins flashing and when pressed again it does the same type of activity as when I open the laptop cover. I have made sure that the BIOS is up to date. I have tried disabling the CPU sleep mode in BIOS, no change. I have tried disabling hibernate in power options, no change. I tried reverting to the Win7 video drivers from the HP website, no change. I don't know what else to try.
I have researched this problem on google search and have come up empty other than the things that I have already tried.