my pc won't wake up in sleep mode

rcopeland · Dec 26, 2013

HELP! I put my new HP Pavilion desktop in sleep mode and now I can't get it to wake up. I turn on the CPU and the on light stays on but nothing happens. I turn the monitor on, it says no signal, then says going to sleep and shuts off.

What do I do to wake it up!!

dodger46 · Dec 26, 2013

rcopeland :

Sleep mode has caused me more problems than any other area of Win 8. Best advice, don't use it!
Meanwhile, with your Monitor on, power off your Tower by holding down the power switch for at least 5 seconds, then try switching on again. See how far you get beyond the Setup splash screen.

rcopeland · Dec 26, 2013

Absolutely nothing. The disk drive light flashed twice upon turning on the CPU but nothing happened on the screen. It stayed black.

When a PC is in sleep mode, is it supposed to wake up by simply pressing a key on the keyboard or moving the mouse? I have never used sleep mode before, and certainly won't use it again!

dodger46 · Dec 26, 2013

rcopeland :

By CPU I presume you mean the Power button on your Tower. (It actually applies power to your Motherboard, and you're supposed to get a splash screen followed by the blue Windows logo as your machine boots.) Normally I would advise a series of checks to make which would involve getting into your Tower, but as it's new it may be advisable to RMA the system as it is definitely not supposed to behave like that!
If you can't even get into BIOS (Setup) then there's not an awful lot that can be achieved. One thing you could try is removing all power from the machine (Switch off at the wall) then press and hold your Power button for about 30 seconds. Release, and try again with power restored. Next you could try resetting CMOS by removing the CMOS battery for 30 secs, but that involves entering your Tower, and if it's sealed it may void your Warranty.
What model HP do you have?

rcopeland · Dec 26, 2013

Unplugging the power and pressing the start button for 30 seconds did the trick!
I had placed a call with HP tech support and they called me about the time you replied last. They had me do what you suggested. They also took control of my computer and made various checks and adjustments. Everything is working fine now.

Thanks dodger46 for your help and suggestions.

Have a very Happy New Year!

dodger46 · Dec 26, 2013

rcopeland :

You're welcome, and a Good New Year to you, too!

John Phillips Jr · Jun 17, 2014

dodger46 :

rcopeland :

Sleep mode has caused me more problems than any other area of Win 8. Best advice, don't use it!
Meanwhile, with your Monitor on, power off your Tower by holding down the power switch for at least 5 seconds, then try switching on again. See how far you get beyond the Setup splash screen.

LilReddy · Sep 10, 2014

dodger46 :

By CPU I presume you mean the Power button on your Tower. (It actually applies power to your Motherboard, and you're supposed to get a splash screen followed by the blue Windows logo as your machine boots.) Normally I would advise a series of checks to make which would involve getting into your Tower, but as it's new it may be advisable to RMA the system as it is definitely not supposed to behave like that!
If you can't even get into BIOS (Setup) then there's not an awful lot that can be achieved. One thing you could try is removing all power from the machine (Switch off at the wall) then press and hold your Power button for about 30 seconds. Release, and try again with power restored. Next you could try resetting CMOS by removing the CMOS battery for 30 secs, but that involves entering your Tower, and if it's sealed it may void your Warranty.
What model HP do you have?

I'm having the same problem with Windows 7 and I don't even know what kind of tower. Is this still likely to work?

LilReddy · Sep 10, 2014

Ohh, thank Celestia.. It did. Thank you so much, dodger! I was terrified!

Sorry for not posting an actual answer by the way.. But I'm sure that's not too much of a problem on a solved question.

dodger46 · Sep 10, 2014

LilReddy :

You're welcome, sometimes works on 'frozen' laptops, too...

Adam Schneider · Nov 23, 2014

rcopeland :

If you have an Asus monitor, thats why. Also you can just unplug and re plug in your monitor from the back of the tower if that happens. It's about 50/50 if my monitor is gonna turn on or not.

HeyDeriq · Aug 11, 2015

This may or may not have been relevant to your situation when it happened, you may have had USB devices plugged into your computer. My Windows 7 desktop doesnt seem to wake up from sleep mode (no keyboard/mouse response, not even the power button pressed/held in different ways) and would not wake until USB devices were unplugged from it. The two devices i had were both external hard drives, it may have something to do with those particular things or with anything usb.

Derrick_3 · Mar 31, 2016

HeyDeriq :

You just saved me a bunch of money. I had almost the same problem except my system was working until I upgraded to Windows 10 (finally). Did this and now it's back to normal

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