Pc dead after loadshedding

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lilggg

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Hi,

I am trying to figure out what's wrong with my pc. It won't turn on at all after load shedding, but if I plug my external drive in it spins and the light is on, however power switch does nothing. To me the psu and mobo must be fine so what else could it be. Tried changing power cables, different plugs, kept psu off for an hour.

All components are less than 3 months old except the psu which is a couple years.

Any ideas?
 
Does the PSU turn on?

I have made a habit since 2015 of letting the PC hibernate after 20 min so its always off in the event of loadshedding.
 
Thanks for the suggestions. Have taken everything out except power to the mobo, cmos included but no luck.

The USB ports seem to be 100% while the pc is off. Can charge my phone and external drive spins.

I've decided to finally get a UPS hoping it does a better job than the surge protector, at least if I can turn the pc off when it kicks in. Also another psu as that may be what's causing all these mobo's to pack up, if that's what the issue is here.
 
gamer16 said:
Does the PSU turn on?

I have made a habit since 2015 of letting the PC hibernate after 20 min so its always off in the event of loadshedding.
Click to expand...

Do you mean does the Psu fan spin when u press the switch? Then no, but turning the psu on via the switch and all the USB ports have power.
 
Scooby_Doo said:
try jump the PSU, force it to turn on without it connected to the motherboard. Google which pins to jump.
Click to expand...
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086cc4d2eb917e4e861c3d075ff955cb.jpg
 
lilggg said:
Thanks for the suggestions. Have taken everything out except power to the mobo, cmos included but no luck.

The USB ports seem to be 100% while the pc is off. Can charge my phone and external drive spins.

I've decided to finally get a UPS hoping it does a better job than the surge protector, at least if I can turn the pc off when it kicks in. Also another psu as that may be what's causing all these mobo's to pack up, if that's what the issue is here.
Click to expand...

Based on this, it seems the PSU is still working because its still providing standby power, just doesn't want to switch on which points to the motherboard, so as others have stated, google how to jump a pc psu and you'll have a answer
 
And that is why I keep my PC off. Haven't touched it in the last 2 months come to think of it...
 
Don't risk losing your valuable equipment through a surge, protect it with the Surge Safe Power Protector Plug. Lowest clamping voltage is 300 volts, (the voltage level at which the surge is stopped and is dropped to a safe level). Where other surge protectors clamp between 700 and 800 volts. 6 stage Surge Protection. 3 MOV's and 3 Gas arrestors (Neon) Absorbs up to 16500 Amps on live and neutral and up to 13 000 Amps on earth.
https://www.takealot.com/ellies-fbwp-surge-safe-power-protector-plug/PLID34187476
99 bux would of prevented that surge/spike after load shedding
 
gamer16 said:
Based on this, it seems the PSU is still working because its still providing standby power, just doesn't want to switch on which points to the motherboard, so as others have stated, google how to jump a pc psu and you'll have a answer
Click to expand...
It's possible that the PSU could still be providing a good 5V supply but the 12V could be down. It's not a binary thing.

On the bundle going to the mobo, there's a green wire. Short that with one of the neighbouring black ones and the PSU should turn on, and you should be able to see voltages on the other pins if you use a multimeter. That would be as definitive a test as I can think of.

@Chuckmyster is right, better to use surge protection. In my case it's provided by a UPS, which would also give you the opportunity to shut down gracefully in the event of load-shedding.
 
newby_investor said:
It's possible that the PSU could still be providing a good 5V supply but the 12V could be down. It's not a binary thing.

On the bundle going to the mobo, there's a green wire. Short that with one of the neighbouring black ones and the PSU should turn on, and you should be able to see voltages on the other pins if you use a multimeter. That would be as definitive a test as I can think of.

@Chuckmyster is right, better to use surge protection. In my case it's provided by a UPS, which would also give you the opportunity to shut down gracefully in the event of load-shedding.
Click to expand...
Came here to say this. There are multiple voltages from the PC, so even if a hdd spins up from it, that's not to say it works 100
 
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