Computer Won't Turn On

I have just moved house and my computer won't turn on now that I've set it up again. I have replaced the kettle plug to check if it's that. It still didn't work. The motherboard is an Asus P8z77-v lx Intel Z77 (Socket 1155).

There is a green light on the motherboard so I assume the motherboard is getting power. I have tried looking but can't find if there's a manual power button on the motherboard in case the case has disconnected.

Thanks.

Check all cables are in. Sata cables come out easy sometimes.

Especially check the ones down the bottom of the mobo (which are usually different colours). That's what seems to catch me out each time when I do a build.

SoAdCrAzY said:

I have just moved house and my computer won't turn on now that I've set it up again. I have replaced the kettle plug to check if it's that. It still didn't work. The motherboard is an Asus P8z77-v lx Intel Z77 (Socket 1155).

There is a green light on the motherboard so I assume the motherboard is getting power. I have tried looking but can't find if there's a manual power button on the motherboard in case the case has disconnected.

Thanks.

Click to expand...

Look on the board and see if the power button cable has come away from the header, if not remove it anyway and short the 2 pins. If there's no post still it eliminates any problem with the case power button.

https://dlcdnimgs.asus.com/websites/global/products/wUVREuJSCNu0ys0i/overview.jpg

On this diagram could you please say where the power socket is so I can check that? Thanks.

** Do Not Hotlink images **

Download the manual.

PWRSW may be loose....



edit, also check ram is fully in

One time after transporting (in pieces) a computer, the green light on the mobo would come on but it wouldn't display anything.

Another time a different computer was bumped and it switched off. Once again, light on mobo but nothing else.

Both were Asus motherboards (not sure this has any relevancy) and both were fixed with a Clear CMOS (this might).

So give that a try too, after checking cables, RAM etc.

I've checked everything. To clear the cmos I just remove that circle battery and put it back on? Do I need any tools? Is it easy enough?

SoAdCrAzY said:

I've checked everything. To clear the cmos I just remove that circle battery and put it back on? Do I need any tools? Is it easy enough?

Click to expand...

No need, there will be 3 jumper pins with a jumper covering 2 of them, just move it over to the next pin and then back to it's original position. Cmos will be cleared after that.

Thank you. The manual just says that the highlighted slots only clear the clock though? Is this right?

You may also want to check All the power supply cables too...just to make sure they are in ( connected ) as they should be

I have checked all the cables and reset the cmos as said but it still doesn't turn on.

have you tried the paper clip test on the PSU?

Another problem. I took the pwrsw cable out and in again and it showed a sign of life. Everything came on briefly. Then the DRAM LED light flashed red and the PSU turned off but the rest of the fans stayed on. Do I need to check my RAM? They're in an awkward location. They're underneath my CPU fan. Would I need to reapply thermal paste to the CPU if I was to remove the big fan or justhe unscrew it from the other side of the motherboard? Thanks.

I have tried pushing the memok button but that doesn't help.

I've just taken off a big cpu fan and managed to reseat the ram but the problem still persists.

Can try outside of case, advice here...

https://forums.overclockers.co.uk/showthread.php?t=18281472

Thank you. I went through all of them steps and it seems like my motherboard is now faulty.

I don't trust myself installing a new motherboard. I'd rather a professional did it. I need to find someone in the Newham area who can do it and not charge a fortune!

Socket 1155 mobos are rare and expensive nowerdays, good luck.

So I've no other option?