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Computer wont turn on after standby - power light blinking


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Jem575's Avatar
Jem575 Jem575 is offline
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09-May-2010, 11:39 AM #1
Computer wont turn on after standby - power light blinking
I have an HP desktop. I accidentally hit the standby button on the keyboard. It started to put my computer into standby but seems to have completely powered it down. I couldn't turn it back on at all. I've tried hitting the power button and unplugging the computer. Nothing works. There is a green light near the power cord in the back blinking and that's it. I've tried unplugging all peripherals before plugging the power back in. I've also tried unplugging it and pressing the power button a few times before plugging it back in. I just can't get it to turn back on.
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09-May-2010, 11:46 AM #2
Turn the switch off on the back of the tower for 10mins...then turn it back on...and see....if the same could be the PC power Supply gone faulty
Cookiegal's Avatar
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09-May-2010, 11:53 AM #3
What is your operating system?

Are you connected to a UPS (back up battery)? If so, you may have to turn it off and then press the power button to restart the computer. You may be prompted for a password on reboot when it comes out of sleep mode.
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Jem575 Jem575 is offline
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09-May-2010, 11:59 AM #4
I don't have a switch at the back of the tower. I've unplugged it directly from the back of the tower though.

I'm on Windows XP. No UPS. I've tried a different power strip and another outlet in a different room.
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09-May-2010, 12:02 PM #5
Is your mouse a USB device? If so, have you tried just moving it? It may be set to allow waking from standby.
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09-May-2010, 12:09 PM #6
Do you get any activity at all or is it completely unresponsive?
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Jem575 Jem575 is offline
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09-May-2010, 12:10 PM #7
Yes, I tried that. nothing worked. I unplugged the computer altogether and it's not turning on at all. Just a blinking light in the back by the power cord.
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09-May-2010, 12:11 PM #8
It's completely unresponsive at this point.
Megabite's Avatar
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09-May-2010, 12:18 PM #9
I would suspect the PC powerSupply...how old is it?
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09-May-2010, 12:25 PM #10
Hi if you feel able to do so..
Turn the computer off and disconnect it from the power
Take off the side of the case and touch the bare metal chassis to discharge static.
Remove Ram..Video cards from their slots

Plug in the RAM [one stick at a time].
Also try different slots.
Ensure it is seated correctly.
Reseat Video card.

Check Hard drive and Motherboard connections [IDE]
Take them off and reseat them.

Inspect the case for dust etc.
Remove the dust..do not use a vacuum cleaner

Check that the processor fan rotate.

Turn on and listen for a beep.

A properly working computer should beep once while booting, and the lights on the keyboard should flash while booting.
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09-May-2010, 12:39 PM #11
Quote:
Originally Posted by Megabite View Post
I would suspect the PC powerSupply...how old is it?
about 4.5 years. Could that suspend button have affected that?
Cookiegal's Avatar
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09-May-2010, 12:42 PM #12
This happened to me a couple of times but fortunately it came out standby. But if you want, once you get it back up and running you can disable that key on your keyboard so this doesn't happen accidentally again.

In the Control Panel - click on Power Options and select the Advanced tab. Then under Power Buttons click on the arrow under When I Press the sleep button on my computer and select Do nothing from the drop down menu.
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09-May-2010, 12:46 PM #13
The Powersupply if faulty has done well..........sometimes the powersupply fails on startup ....sometimes just shuts down or you go to turn it on and nothing happens....nothing you have done would have made it go...it was just its time.

You can have the powersupply checked at any PC store but a new PowerSupply would be cheaper.

I only highly suspect the powersupply but it may not be.
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09-May-2010, 12:46 PM #14
Thanks Cookiegal. Hopefully I can get it back online. I was in the middle of a project when it happened
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Jem575 Jem575 is offline
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09-May-2010, 12:48 PM #15
Thanks, Megabite. I'll see if I can find a new power supply. Can I pick something like that up at a store like Staples or is it online only?
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