Is My Motherboard Dead?

[jordanblaze]

My PC was working fine for a good 5 months then one day i came home and it won't boot. When I pressed the power button the mobo leds would come and that's it, no fans, no noise, nothing. I figured it was the power supply so I bought one and tried it but the same thing still happens. I tried clearing the cmos it changed one thing: before I cleared it I had to press the pwr button for the motherboard leds to come on but now as soon as I turn on the power supply they turn on so it had to do something which makes me think that it's not the mobo that's dead. I also reseated the RAM unplugged everything one by one done to only the motherboard was plugged in,i took it out the case. So i'm completely stuck here what could be wrong?
Specs:
CPU: Ryzen 3 1200
RAM: some cheap crucial oem RAM ddr4 2400mhz
GPU: rx 560
Power supply: Evga 500w white

 

[Chicano]

• Check the PSU selector switch from 225v to 115v... Could it be it is on 225v and your house supplies 115v?

• The AC power source; Surge Protector, voltage regulator, etc. whatever you use, could be the cause.. try different variations of connecting the computer to AC power.

• Try connecting the computer to another power outlet, another room, turning off everything else.

• Try pressing the power switch firmly and longer than normal... try pressing and holding the power switch up to a second. Also, try disconnecting the power switch from the motherboard header pins, and turn it on by jumping the two pins with a small screwdriver or small metal object.

Symptoms of faulty case power switch
http://www.tomshardware.com/forum/330329-31-faulty-case-power-switch

The computer issue given in this thread gave the same symptom of the computer starting as soon as it is connected to AC power, without pressing the power switch. But why the difference at the shop? maybe the technician pressed the power switch firmly and that made the difference.
http://www.tomshardware.com/forum/303581-28-case-switch

 

[jordanblaze]

My PSU doesn't have a voltage selector switch
I tried holding down the switch firmly already
I already tried jumping it
I tried every outlet
I tried with and without the surge protector

 

[Chicano]

Well, next up is trying to pinpoint the difference between your house and the shop:

1. What the difference is that makes the computer turn on at the shop.
2. If the problem is your house's electrical circuitry, it may work in some other house. Take it to a friend's or family member's house, and see what happens.
3. Tell the technician what happens... he may have an accurate idea of what the cause is.

 

[jordanblaze]

Well the difference at the shop is that there building supplies 115v while my house supplies 110v but my pc was working at my house for 5 months as i said before so idk how that works. I called the electrician and he is coming here today. I already told him what is the problem. If he checks everything and he says there is nothing wrong with my house then i will go to a friend's house and if it doesn't work there. Well you guys tell me what i should do from there

 

[jordanblaze]

Well the electrician came and checked the house and said nothing was wrong with the wiring in the house and when he checked the pc he was baffled as well he even carried it to a more reliable shop and it worked there and when it came back it STILL doesn't work. So i'm still stuck,

 

[Tinstaafl]

Well if it's not a faulty power switch, my vote would be the power supply. Try hooking up a new one.

 

[jordanblaze]

Well if it's not a faulty power switch, my vote would be the power supply. Try hooking up a new one.

That was the first thing I tried doing still the same result.

 

[asoroka]

Can you take the computer to a friends house to see if it works there.

If so then that certainly points to an issue with your domestic supply.

 

[Tinstaafl]

Get a friend to bring their computer to your house.

 

[RememberThe5th]

Sorry, accident downvote..... Damn phone.

 

[jordanblaze]

Well I brought my pc to a friend's house and it didn't work, which has me even more confused since it worked at the two different shops

 

[asoroka]

Lets go back to basics then.

Take the motherboard out of the case and see if you can get the system to work on the bench, so just 1 stick of RAM, GPU and PSU.
You may need to bridge the PWR button jumper (just a single touch with screwdriver to simulate the power button).

If that works then we are looking at some sort of case (intermittent) problem.

 

[Chicano]

1. Take the computer to a neighbor's house

2. Run a long extension cord from your next door neighbor's to your home and run the PC from there

3. If 2 doesn't work, take the PC outdoors and run it from the same extension cord.

4. If 3 works, plug the extension to an AC outlet in your house and the PC outdoors...

5. If 4 works, turn everything in your house off and connect the PC to the usual AC outlet


The idea is to test if the cause is the AC current source or the location (your house).. maybe something is drawing too much power

 

[Chicano]

Well I brought my pc to a friend's house and it didn't work, which has me even more confused since it worked in the two different shops

OK, I missed your last answer... so my last suggestions may not work if your PC did not work at your friend's house. that should indicate AC power issues. My question to that would be if your friend's house is nearby? if so, the area may be getting lower than normal AC supply.

 

[jordanblaze]

I already removed those components out of the case and jumped the motherboard twice already. I tried it again as you said and still nothing only the motherboard LED's like before.

 

[Tinstaafl]

I already removed those components out of the case and jumped the motherboard twice already. I tried it again as you said and still nothing only the motherboard LED's like before.

I think he means to remove the motherboard from that case, and by so doing eliminate the case and case wiring as a potential cause.

 

[jordanblaze]

My friend's house was relatively far but it could also have electrical problems but I doubt that

 

[jordanblaze]

Right that what i meant i took the motherboard out to see if anything in the case was tripping the motherboard and i still got the same result.

 

[Chicano]

My friend's house was relatively far but it could also have electrical problems but I doubt that

Question: When you have taken the computer to both shops and your friend's house, did you take the monitor along or leave it behind?...

I mean, have you discarded the monitor as possible cause?... everything else to be working, except for initially stopped fans?

 

[jordanblaze]

My friend's house was relatively far but it could also have electrical problems but I doubt that

Question: When you have taken the computer to both shops and your friend's house, did you take the monitor along or leave it behind?...

I mean, have you discarded the monitor as possible cause?... everything else to be working, except for initially stopped fans?

Well the technicians at the shops said they first tried turning it on without anything connected and the pc turned on normally, no issues what so ever and that is what I have been doing at home as well, turning it on without anything connected. So it can't be the monitor.

 

[jordanblaze]

Well guys i took it back to the first technician i brought it to, to see if he was telling the truth about it wotking at his shop and to my amazement it did so i told him ot wasn't working at my house so he took it back for free then he called two days later confirming that the motherboard is the problem so my next step is to get a new motherboard and if that doesn't work something HAS to be wrong with my house

 

[jordanblaze]

Well guys is was the motherboard indeed and I replaced it with a new one and it's working now, THANKS FOR EVERYONES's help and very grateful for it.

 

[Tinstaafl]

Well that was a good educational story. Thanks for coming back with the resolution!