Question My PC died and can’t find the solution

[ToxicThing]

My PC stopped working in the morning.

Day before my PC died, I have used it normally, everything worked fine. Then next day, in the morning, my PC did not want to turn on. Like there was no power in it at all. First I thought my PSU died. I changed my PSU for the new one, but nothing. Pitch black situation in my pc case. I then found a good, used lga 1151 motherboard and changed my old one. I had an idea it was the dead motherboard because I have tested the PSU (old one) with paperclip method and it turned on the HDD and SSD, but did not want to turn on Motherboard when connected to it. Anyway, I changed the motherboard and connected everything, with the new PSU, and still nothing… I tried new mobo with old psu but nothing… I also tried disconnecting gpu, ram, hdd, ssd… Nothing.

I honestly have no idea at all what to do now. I tried everything. It’s not the cmos battery, it’s not the switch on the back of psu, it’s none of those “simple” solutions.

Do you have any other idea?

 

[Aeacus]

Full system specs, including PSU make and model (or part number) is? Also, how old the PSU is, and was the PSU bought new or used/refurbished?

I have tested the PSU (old one) with paperclip method

Paperclip test is not a test to make sure PSU works fine.

All this does, is like you turning on the car engine and when engine starts, you instantly assume that the car drives just fine, without ever doing the test drive.
So, no. Just turning on the PSU, without putting any load to it, doesn't mean PSU works fine.

 

[Zerk2012]

My PC stopped working in the morning.

Day before my PC died, I have used it normally, everything worked fine. Then next day, in the morning, my PC did not want to turn on. Like there was no power in it at all. First I thought my PSU died. I changed my PSU for the new one, but nothing. Pitch black situation in my pc case. I then found a good, used lga 1151 motherboard and changed my old one. I had an idea it was the dead motherboard because I have tested the PSU (old one) with paperclip method and it turned on the HDD and SSD, but did not want to turn on Motherboard when connected to it. Anyway, I changed the motherboard and connected everything, with the new PSU, and still nothing… I tried new mobo with old psu but nothing… I also tried disconnecting gpu, ram, hdd, ssd… Nothing.

I honestly have no idea at all what to do now. I tried everything. It’s not the cmos battery, it’s not the switch on the back of psu, it’s none of those “simple” solutions.

Do you have any other idea?

Its possible that the power switch on the case failed try to jump start it with a screwdriver.
Plenty of videos on YT if you don't know how.

Edit if that is it then put the reset switch wires where the power switch wires go and just use the reset switch.

 

[ToxicThing]

Full system specs, including PSU make and model (or part number) is? Also, how old the PSU is, and was the PSU bought new or used/refurbished?


Paperclip test is not a test to make sure PSU works fine.

All this does, is like you turning on the car engine and when engine starts, you instantly assume that the car drives just fine, without ever doing the test drive.
So, no. Just turning on the PSU, without putting any load to it, doesn't mean PSU works fine.

I see.

Here is the full spec list:
i5-6600k
amd radeon rx480
msi z170a gaming m5 and new one Gigabyte z170-hd3p
corsair rm750x and new one cooler master mwe 750 gold v2
hyperx ddr4 2x8gb
wd blue 1tb
seagate 250gb ssd
evo 212x cooler

 

[ToxicThing]

Its possible that the power switch on the case failed try to jump start it with a screwdriver.
Plenty of videos on YT if you don't know how.

Edit if that is it then put the reset switch wires where the power switch wires go and just use the reset switch.

I have also tried that on the motherboard. SI have switched power and reset cables places, still nothing

 

[ToxicThing]

I see.

Here is the full spec list:
i5-6600k
amd radeon rx480
msi z170a gaming m5 and new one Gigabyte z170-hd3p
corsair rm750x and new one cooler master mwe 750 gold v2
hyperx ddr4 2x8gb
wd blue 1tb
seagate 250gb ssd
evo 212x cooler

edit: the psu corsair is about 6 years old and cooler master is the new.

 

[Aeacus]

0 life is strange.

1. Breadboard your MoBo. Meaning you put it to any cardboard box.
2. Take out the Radeon GPU and connect monitor to MoBo.
3. Take out one RAM stick, use only 1 RAM.
4. Hook up PSU, monitor, KB/mice. SSD/HDD isn't needed, since currently, goal is to POST and get to BIOS.
5. Look if PC turns on. (short power + and - pins on MoBo to turn it on. Afterwards, flip PSU switch to turn it off.)

If still 0 life, use Cooler Master PSU.

It should look like this:

Also, with your Gigabyte MoBo, did you transfer your CPU around? Or does that MoBo also has CPU in it?

 

[ToxicThing]

0 life is strange.

1. Breadboard your MoBo. Meaning you put it to any cardboard box.
2. Take out the Radeon GPU and connect monitor to MoBo.
3. Take out one RAM stick, use only 1 RAM.
4. Hook up PSU, monitor, KB/mice. SSD/HDD isn't needed, since currently, goal is to POST and get to BIOS.
5. Look if PC turns on. (short power + and - pins on MoBo to turn it on. Afterwards, flip PSU switch to turn it off.)

If still 0 life, use Cooler Master PSU.

It should look like this:

Also, with your Gigabyte MoBo, did you transfer your CPU around? Or does that MoBo also has CPU in it?

I will try the things you suggested.

I transfered my cpu to the new mobo.

 

[Aeacus]

I transfered my cpu to the new mobo.

Did you check if there are any bent pins in CPU socket? Both in the MSI MoBo and in Gigabyte MoBo?
Might need to use magnifying glass to see the pins.

Also, when you turn on the breadboarded MSI MoBo, look if any debug LEDs light up (top right corner of MoBo, next to RAM slots). Btw, i have same MSI MoBo as you do.

 

[ToxicThing]

Did you check if there are any bent pins in CPU socket? Both in the MSI MoBo and in Gigabyte MoBo?
Might need to use magnifying glass to see the pins.

Also, when you turn on the breadboarded MSI MoBo, look if any debug LEDs light up (top right corner of MoBo, next to RAM slots). Btw, i have same MSI MoBo as you do.

No, all the pins are fine on both mobos.

I will.

 

[ToxicThing]

0 life is strange.

1. Breadboard your MoBo. Meaning you put it to any cardboard box.
2. Take out the Radeon GPU and connect monitor to MoBo.
3. Take out one RAM stick, use only 1 RAM.
4. Hook up PSU, monitor, KB/mice. SSD/HDD isn't needed, since currently, goal is to POST and get to BIOS.
5. Look if PC turns on. (short power + and - pins on MoBo to turn it on. Afterwards, flip PSU switch to turn it off.)

If still 0 life, use Cooler Master PSU.

It should look like this:

Also, with your Gigabyte MoBo, did you transfer your CPU around? Or does that MoBo also has CPU in it?

I have tried everything you wrote, but no luck. Still dead. Nothing similar has ever happend to me...

Everything is the same with the old and the new psu. I have tried both...

 

[Aeacus]

Everything is the same with the old and the new psu. I have tried both...

Hmm...

It really doesn't make sense. 0 life indicates complete PSU failure. But you have RMx, which is good quality and CM unit as well, as backup. Chances that both are toast are low.

MoBo failure would at least give you some life on the board, but without POST (no image on screen). And chances that two MoBos are toast, are also low.

This would leave RAM and CPU.
DDR4 is quite cheap and you could try with 2nd, known to work RAM stick. CPU is the most durable component inside the PC and it would be very unlikely that the chip itself is dead. Even if it would, MoBo debug LED would show that. Same with RAM as well.

To rule out CPU and RAM, you'd need to get your hands on 2nd, known to work RAM and CPU, so you can test them in your MoBos.