Remove power then press and hold the power button for 60 seconds. This does a mini reset on many PCs. It does not wipe settings or drives.
Release the power button, apply your power cable (check it's plugged into a good socket with power) and then try again.
If this fails you need to supply more PC details to see what Dell or the maker has on troubleshooting.
I put my computer to hibernate for (4 hours). Now I can't wake my PC up, my dell monitor displays 'no signal coming from computer...'.
I have tried to unplug every cable / turned off everything and restart but still the screen remains black and non of my USB port seems to be working (Mouse and keyboard not responding.)
I'm running out of ideas on what to do anymore.My computer was working perfectly fine and all of a sudden I can't seem to wake it up.
Any help would be appreciated as I have some urgert things to do.
Thank you.

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