Cleaned my pc with air blower, now it won't boot up (not even in bios)

HarlequinKei · Jan 4, 2017

So I made the decision to clean my pc by blowing air into it (balloon air pump) as there were a lot of dust bunnies compiled in it. Specifically I blew air into the psu as I thought it needed cleaning because I was seeing wavy like lines on my monitor for some time now.

Anyway, after pumping air to remove the dust bunnies my pc now doesn't boot up. I can't even see the bios anymore. I reseated every cable in there just to be sure. Also tried resetting CMOS. I still just have a black screen and my pc won't read my keyboard or mouse. My monitor goes to auto standby after just 10 secs. My fans do turn on though. My cpu fan does as well. I need help, I'm lost

Do you guys think the PSU is the culprit?

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Ubrales · Jan 4, 2017

Yes the PSU is the problem. Try a different PSU with adequate (or higher) power.

atomicWAR · Jan 4, 2017

It is possible your PSU is the culprit as is your motherboard. Those dust bunies can have static and damage components with a simple touch electronics can die...or they could have even formed a carbon arch and shorted your PSU/ motherboard. I would look at your motherboard and see if you find in carbon scoring on the front or back. If so it may be dead. Also swap out another PSU if you have one and see if that fixes the issue.

Ubrales · Jan 4, 2017

Next time use a can of compressed air. Compressed air is moisture-free and costs less than $3 at most computer stores. And it will give you the capability to direct the air stream exactly where you want it.

HarlequinKei · Jan 4, 2017

All right, Ill go ahead and buy a new PSU tomorrow. Hopefully I didn't do anything with the mobo.. fingers crossed!

Rogue Leader · Jan 4, 2017

Don't buy anything just yet.

There is an easy way to test if your PSU is dead, maybe you just jostled something loose.

Anyway, disconnect the large 24 pin connector from your motherboard and look for the green and black wires that are right next to eachother (usually pins 15 and 16), take a paperclip, bend it, stick it into those 2 holes effectively jumping them out.

Then turn on the switch on your PSU. if it starts up and the fans spin, its not the PSU.

HarlequinKei · Jan 4, 2017

Rogue Leader :

but it does turn on. my pc does turn on. its just that I only have a black screen and cant get it to boot (not even in BIOS). So I'm a bit confused as what this test would do? enlighten me master

Rogue Leader · Jan 4, 2017

HarlequinKei :

Ok I missed that part. Its definitely NOT your power supply if your system is turning on. Do not do the test, and do not listen to the others advice to try or buy a new PSU. At least I've prevented you doing that even though I misdiagnosed.

First thing I would do is double check every connection internally, if that even means disconnecting and reconnecting each thing do it. Then do the same outside and make sure all was plugged back in properly and solidly. Then try it out and let me know.

HarlequinKei · Jan 4, 2017

Rogue Leader :

HarlequinKei :

Ok I missed that part. Its definitely NOT your power supply if your system is turning on. Do not do the test, and do not listen to the others advice to try or buy a new PSU. At least I've prevented you doing that even though I misdiagnosed.

First thing I would do is double check every connection internally, if that even means disconnecting and reconnecting each thing do it. Then do the same outside and make sure all was plugged back in properly and solidly. Then try it out and let me know.

i will do so. hopefully its not the mobo. I just cleared the dust for goodness sakes!

thank you so much. I'll update this once I'm done.

Rogue Leader · Jan 4, 2017

It may be as simple as you've blown dust into a connection or you accidentally loosened something that should not be. However static electricity is a possibility as well.

One other thing you mentioned is seeing wavy lines on the monitor. That could be an indicator of your GPU failing, and the "dusting" may have been the nail in the coffin.

HarlequinKei · Jan 4, 2017

Rogue Leader :

I did what you suggested. 24 pin, 4 pin, every cable that I could. the only thing I didnt move was the battery thing for the clock. I still have the same issue. just no input signal and my monitor turns off. peripherals dont turn on as well. I just noticed that pressing the power button for 5s or more don't work. I needed to turn off my voltage regulator to turn off my pc. I provided pics for reference btw.

Also, I'm using an APU. kaveri I think.

Rogue Leader · Jan 4, 2017

HarlequinKei :

[strike]I don't see any pictures.[/strike] now i see them. Did you also make sure your RAM is fully seated in there as well?

[strike]Can you provide your full system specs, including brand and model of all parts?[/strike]

I see yo do not have a GPU, which connection are you using?

I'm starting to think the motherboard may have failed, but please check the RAM first. Even remove it and re-install it.

HarlequinKei · Jan 4, 2017

Rogue Leader :

HarlequinKei :

[strike]I don't see any pictures.[/strike] now i see them. Did you also make sure your RAM is fully seated in there as well?

[strike]Can you provide your full system specs, including brand and model of all parts?[/strike]

I see yo do not have a GPU, which connection are you using?

I'm starting to think the motherboard may have failed, but please check the RAM first. Even remove it and re-install it.

I did. I had 1 4gb ram. tried it in the other slot, nothing.

Rogue Leader · Jan 4, 2017

At this point it leans me to your motherboard being cooked.

You may want to confirm this assessment with your local computer shop, but without a GPU and based on the symptoms Thats your most likely problem.

HarlequinKei · Jan 4, 2017

Rogue Leader :

nooooooo......... I hope you're wrong

. will test it out tomorrow. thank you for the input. Btw, should I remove PSU as one of the culprits? It's really where I focused my air on because of all the dust in the fans and inside it

Rogue Leader · Jan 4, 2017

HarlequinKei :

If the computer is starting up and turning on its HIGHLY unlikely that its the PSU, that would have to be an extremely strange near impossible failure.

If you happened to have a spare PSU sitting around to swap in, then sure knock yourself out, but its probably a waste of time. Definitely don't spend money on one.

HarlequinKei · Jan 6, 2017

ok i resolve the issue by reseating my processor and aplying new thermal paste on it. go figure. anyway this has been resolved and I thank everyone for giving me inputs to resolve this issue. esp to rogue who gave the benefit of the doubt to my psu. Thank you, you saved me money

Rogue Leader · Jan 6, 2017

HarlequinKei :

Glad it worked out. Very strange that that was the issue I don't see how blowing air would cause that however somehow it did and so it worked!

Cleaned my pc with air blower, now it won't boot up (not even in bios)

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