I booted up my Compaq Presario CQ56, went away for approx 15 mins and it had gone to sleep. On my return, I could not wake it up. It seems to be stiuck in Standby. When I turn it off, it owers down but does not seem to turn off. When I press the on button it just comes o like, but with no screen or key functions. I have tried all the usual, but no luck. Can anyone help!!!
I think it's stuck in hibernation. I would try this trick:
Disconnect the power cord and pull out the battery. Then press down the power button for a least 30 seconds. Then reinsert the battery and reconnect the power cord and start the laptop normally. This "hard reset" might fix your problem.