Psu working but no signs of life from motherboard.

[redder9513]

... Specs....

Gtx 970 4gb
Asrock z77 extreme 4 mobo
Intel I7 3770k ivy bridge
2x 4gb ddr3 corsair vengance
Psu cooler master gx 750

I am not the most pc savvy person so bare with me please.

So today I was cleaning the dust from inside my NZXT rig, only took out two sticks of ram and my gpu, gave it a light spray with compressed air in the dusty places, then packed it all back in. I went to turn on my pc when as you might guess, nothing happened. No lights, no sound, nothing.

I made sure everything was seated properly (which it is), then went on to test my psu. Plugged psu 20 prong and 4 prong into spare t3400 rig, mobo (tp412) and the light on the motherboard turned on.

Since it was an ancient pc I thought maybe it uses less power to run so I did the safety pin test....

Inserted pin into psu cable and sure enough on my NZXT, psu fan was spinning but also all my other fans on the rig plus all my LEDs lit up. So then I plugged it all back in and still get nothing.

Any advice would be appreciated

EDIT: also power was unplugged while I was cleaning.

I made sure back of mobo did not touch case while reinstalling ram and gpu.

 

[Philballer17]

Most people will tell you that compressed air is safe for components. But in reality, it can be detrimental due to the liquid it also sprays out alongside of the air. This cold liquid can damage motherboard components and even RAM sockets. You shouldn't spray this directly into any motherboard system without giving it plenty of time to dry off first before booting things up, and even then something can still get damaged.

I hate to break the bad news to you, but it's possible you may have caused a short circuit somewhere on the motherboard with that compressed air spray.

 

[rscheetah30]

It seems to me like 2 possibilities; one is one of your ram sticks has died and is stopping the pc from turning on normally, the other possibility is the motherboard has been critically damaged while you were performing the cleaning of your pc parts.

Start trying just one ram stick at a time to see if one of the two is damaged, don't forget to change slots as well. If that doesn't work then there's a really good chance of motherboard damage, in which case I'd have a tech guy check it out.

 

[redder9513]

Sorry guys I'm not sure how to reply to a single message, I have tried the ram in different slots and one at a time, still nothing.

Dammit guys I was dreading the though of it but it seems pretty likely its fried, I have a friend who's certified in pc repairs coming over this afternoon to have a look and I'll post what he says as a follow up

Thanks heaps!

 

[redder9513]

Yep just as Phil said, I've absolutely fried it. Thanks for your input guys muchly appreciated