Computer Does Not Wake Up or Resume from Suspend/Hibernate Mode
This article attempts to resolve issues pertaining to a computer that does not wake up from sleep, suspend or hibernate mode. Generally this is the result of an incorrect power state setting in the BIOS or a corrupted video driver.
Verify the Computer Finishes Initial Power-Up (POST)
In many cases a computer will not attempt to hand off control to the operating system. If you power the computer on and you see a Dell logo screen with a bar at the bottom, and that bar fills up completely and disappears, then your computer has successfully completed POST.
Press the power button on the computer to attempt to resume from suspend.
If the computer does not turn on at all, remove all power from the system (AC power and battery) and wait for 10 seconds.
Plug the power cord and/or battery back in and press the power button again.
In some cases suspend/hibernate issues can be caused by incorrect or outdated BIOS settings or video drivers. Be sure to regularly update your drivers to take full advantage of your hardware and software. Try updating each of these drivers individually and then retest the system to see if the problem continues.
If you are still experiencing suspend/hibernate issues in Windows, and the troubleshooting steps above have not resolved the problem, the system may be experiencing an underlying lockup problem. To troubleshoot Windows lockups, refer to Dell Knowledge Base Article: