Not posting, no display, and I can't power off using the power button

Wishgallon22

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Sep 23, 2013
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So what happened was my friend was using my computer. I have my PC plugged in to a power strip and he was fiddling with it and accidently flipped the switch with his toe. He realized so he went back under the desk and turned it back on. Then using the power button, he turned the PC back on. Thats where the problem started. I got no display, and when I tried to turn it back off the power button did not do anything so I had to flip the switch on my power supply. My friend swears her did not quickly turn it back on to maybe simulate a power surge, but I'm not entirely sure if I should believe him. I've never had any other problems with this computer before and I highly doubt this serious of a problem could be caused by a simple power surge.
Here's my specs:
AMD Athlon 2 x4 CPU
4GB Of 1600MHz Corsair Vengeance RAM
AsRock 970 Pro 3 Motherboard
Sapphire AMD Radeon 7770 Vapor-X GHz Edition GPU
***My power supply is pretty cheap so I don't even know the brand but its a 660W
I'm runnning Windows 7 Ultimate 64 bit

Any help would help A lot.
 

Dogsnake

Distinguished
Try this..Shut the PSU off with its' switch on the back; Open the case and remove the CMOS battery; Wait a minute or two or three; Put the battery back in; Turn the PSU switch to on; and try to restart the system. You may get afew messages asking how to start and you will select your HDD as the boot device and start windows normally .
 

stevenpchurch

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Jun 22, 2006
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Hi - I'm on an old XP machine right now so I can't double check in Win7 but in XP, under Control Panel - Power Options - Advanced , there is a drop down menu that lets you disable the power button. Check it in Win7. Your "friend" might have decided that it would be funny to screw with you.
 
To power off with the power button, hold the button down for 4 seconds.

Switch off the psu, then unplug it.

If this does not bring back normalcy, then consider replacing the psu if it is a cheap one.
A cheap psu can cause other damage.
Look at the psu data plate to fine the brand/model.
Every psu must have a UL data plate.
 

Wishgallon22

Honorable
Sep 23, 2013
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I can hold the power button for hours and it won't make a change. I even tried removing the CMOS battery, leaving it out, and putting it in again. Nada. I'm thinking of just buying a new PSU because it was a cheap one and I knew I would have to upgrade it eventually but what if that doesn't work than I would of just spent money on a power supply for a broken PC. I'm also thinking it could be the RAM because this happened once when I was stupid and tried to boot without the RAM so imma just get a little 2 gig stick and try it. I pray to god this works
 

tommyt1881

Prominent
Sep 24, 2017
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I just fixed a computer that had the same exact symptoms. It had all started when a friend wanted me to transfer the guts of on pc to another. Everything worked fine before I started but when I was done I was in the same boat. First thing I noticed was that the Power button would start it but would not turn it off after pressing it seconds at a time. I didn't think much of it as that is a minute problem compared to the problem at hand so I forgot about it. Down and out because nothing on the internet worked. I narrowed it down to about 3 components that could be the cause. The Motherboard, CPU, or Power supply unit. There are others but i was able to eliminate them. Now back to the power button and why the pc would'n't turn off holding it down. It took me some pondering but I came to a conclusion that this was most likely a power supply problem but that isnt always the likely cause. I got out the voltmeter and started checking the power supply unit. I got to the 8 pin ATX Power connector on the Motherboard and had no power from it. Now I have looked up the symptoms of not connecting that power connector to the MB. This may include, No beep on startup, no video, fans and lights come on but nothing else doesn't. The wire actually had a loose connection at the Power supply. The fix was actually easy. I took that cable off and checked continuity of each wire and I didn't find anything wrong with it. There are a couple fixes, 1 buy a new cable or power supply depending if you can remove it or altering the wire to fit in the plug. ONLY do this if you know what you are doing and experienced. I am not responsible for what you do to your computer. I altered the wire because my friend wanted it up and running ASAP without having to order a part. To do this I cut the end of the plastic connector( the side that is most loose. Both sides may need it.) I took off about the with of a dremel cut disk. this allowed me to get a better connection with the pins. I plugged it back in and noticed it had snugged up quite a bit. Turned it on and it all seemed to work along with the power button now when pressed Turns it off. Sometimes it is finding those minute problems can be all the difference between fixing it or junking it. Check all your connections for looseness, have patience and eliminate items you know for sure have nothing to do with it. Don't give up or get discouraged. There are solutions for this issue
 

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