OK the way you wrote this is kind of confusing so let me see if I am understanding correctly.
Also, first, you should never hold a power button for longer than a few seconds, 60 seconds max. Never minutes or hours.
Now, if I am getting this, your laptop goes into sleep mode and then you can't get it to wake, you just keep getting a black screen. Is that right? If that is the case, you can try the info I am including below, if that doesn't work, or that isn't what you mean was the problem (and it is something else) then please clarify.
OH and you should never try to get out of sleep mode by pushing the power button.
First try this...
- Go into "Control Panel" and click the "Power Options".
- Next to the plan that is currently selected click "Change Plan Settings".
- Now click "Change Advanced Power Settings".
- Open the "Sleep Setting" and find "Hybrid Sleep"
- Change/set it to allow.
- Now click "Apply" and then click "OK".
- Finally shut down and power up the computer.
Should the above not help, then try the following...
Try updating the power management drivers.
First make sure that the laptop is using the most current version of the power management software. If not, update the drivers. Follow these steps:
1. Go to "Control Panel" and then click "Device Manager".
2. Double click and open "System Devices".
3. Right-click "Microsoft AC PI-Compliant System".
4. Now choose "Update Driver Software".
5. Carefully read all the instructions onscreen.
You may wish to also repeat these instructions, but right-click "Microsoft AC PI-Compliant Embedded Controller" in Step 3. (if located on your system)
If this doesn't work, you may need to go to the laptop manufacturer’s website and search their support section and locate any new power management drivers for your laptop make and model.
IMPORTANT NOTE: Do not remove any AC PI entries. Doing so may disable some of your laptop’s power management features, such as the ability to put it to sleep by pressing the Power button. It is also a tad complicated to reinstall those features, so best to avoid the problem all together.