PC boots for a fraction of a second and then shuts down and attempts to restart it self in a loop

[Lethiferous72]

Hi guys,

 

I have a somewhat a weird problem after changing my PSU. I already searched ton of threads regarding similar issues that people experienced but none seems to be a fix to my case what so ever, so I decided to make my own thread and provide you as many details that I can.

 

First things first I bought this PC fully built back in 2016. Its a mid range gaming pc that was pretty good deal in terms preformance > price. And indeed it was great while it worked properly, but after somewhat 2 - 2 and a half years after purchasing I experienced auto shutdowns and restarts if I turn on some heavy load or bump up the graphics options in some of the games ( ex. Fortinte, PES 2020, even Ring of elysium the battle royale...). This never ever happened to me before as I could run the battlefield 1 on ultra without any issues or shutdowns, only somewhat higher temps obviously but all in range of safe usage. So after some online research I found that 90% of the people fixed this issue by changing their PSU, but before I did that I tried every single alternative option in hope I would not need to buy a new one, but unfortunately none of the tricks & tips from google worked. So I decided to ignore that problem and get used to running things on low - medium and render videos in 720p instead of 1080p because 1080p would crash it aswell. But few days ago I finally decided enough is enough and I will buy a new one and fix this issue once forever... ...and it didnt turned out as I planned, what happened is my PC now sometimes turns on for a minute or two, sometimes for 30 seconds but most of the time its turns on for a fraction of a second and shuts down in attempt to try to boot again but longer I allow it to do this the quicker it restarts and after 2 attempts the only thing left lighten up is my main PC tower power button...now this is very depressing, frustrating and mind buggling because it seems like I fucked up my pc totally by trying to fix it.

 

I will now list of the things I tried to do so far ( before I quited messing with it )

 

List of things before I changed the PSU

 

I checked my temps while under load GPU would hang around 65C-73C max and CPU would be around 33C- 43C ( new cooler ) 39C - 48C ( stock intel cooler )

Reinstall Windows OS ( 2x times )

Deleted all my GPU drivers with DDU and cleaned %temp% ( temporary files )

Cheched for viruses, none found

Tried plug/unplug PSU cables and reseating GPU

Changed thermal paste to the CPU

Bought new cooler for CPU and messed a bit to get better airflow, temps are just where I want them to be now.

Reseted BIOS settings to default factory settings

Updated BIOS

Updated all windows updates

Underclocked my card, after that didnt worked I also tried to overvolt it and undervolt it, I am was basicaly desperate at this point so I tried everything that I could

I tried to plug my power outlet directly to the wall

PRIME 95 cpu stress test all cores max temp of 45C and it did not crash the system

FURMARK gpu stress test for 1080 predefined profile PC crashed immedietly I didnt even saw anything, it crashed as soon as I clicked GO!

at this point I gave up

 

None of these worked so I gave up and got used to run things on lower load than I would prefer. ( low settings ...blabla )

 

Here is a list of things I tried after I changed PSU and my PC denied to boot properly

 

Checked and plug/unplugged all the cables from the PSU

Reseated Both RAM sticks and tested it with each one and in each socket

Cleaned some dust leftover

Messed up with cable managment but I did a good job so I didnt got to do much more

Pluged and unpluged cables from PSU

Reseated GPU

Changed CPU thermal Paste again

Managed to get to the bios once and saw that CPU rendering cool 24C idle so no its not overheaeting issue

Reseted CMOS Battery, I waited 30 min before returning it back inside

Reseated GPU again...lol

Tried running it without GPU

Turned it on with only power outlet

.....I think thats about it

 

The funny thing is when I change sockets in my extended power cord it runs for a longer time same happens if I plug it to the wall, but if I try the socket I already tried it boots for a second and resets, If I let it stay overnight and come back it runs for a much longer time. Motherboard works fine everything else works fine and is powered all the lights show on each device ( mouse, keyboard, monitor ), but it denies to boot properly.

 

I know this is plenty of text, but I wanted to provide you guys with as much detail that I possibly could in hope I will be able to fix this problem anytime soon.

 

Below are my PC specifications

 

GPU: XFX AMD RX 480 8GB stock clock memory 1288mhz , vram 2000mhz

CPU: intel i5 6500 four cores 3.2ghz

RAM: 2x 8gb hyper X so in total I have 16gb of ram

MOTHERBOARD: gigabyte ultra durable h110m

HARD DRIVE: 1x Toshiba 1tb

OLD PSU: EPS ENERGON 650W semi - modular

NEW PSU: CORSAIR CX650W semi-modular

OLD CPU COOLER: stock intel cooler

NEW CPU COOLER: Cryorig h7

PC CASE: COOLER MASTER K380 MID-TOWER

 

I dont want to make this any longer now I honestly think this is more than enough for you to come up with some ideas regarding what should I do....dayum.

Thank  you guys for all the efforts and suggestions, means alot :)

[Chiyawa]

So, when you say boot, does it go to your motherboard logo then cut off, or you just switch it on and got a black screen, and your system just turn off for a second and turn itself back on?

So what you can try is to bring your system over to your friend's house and test each components one by one.

[Lethiferous72]

11 hours ago, Chiyawa said:

So, when you say boot, does it go to your motherboard logo then cut off, or you just switch it on and got a black screen, and your system just turn off for a second and turn itself back on?

So what you can try is to bring your system over to your friend's house and test each components one by one.

It boots normally,  I can see the screen and everything looks normal,  when it runs for longer than usual it actually loads all my apps and windows and after few more seconds it shuts down,  but usually it runs max of 2 sec and then restarts. The longer I try to power it on in a row the quicker it shuts down,  until it doesnt even light up anymore and the only thing left on is power button,  mouse and keyboard. 

 

I dont know what to do. 

[Chiyawa]

Looks like heat issues. But it could be the problem with the CPU chip.

 

Also, how's the voltage reading in the BIOS? Are they good (12V should be a little higher, around 12.4V)?

 

Here's what I can suggest to you:

Can you push your heat sink down to see if it is at the very end of the CPU?

Do you have a spare CPU chip? I suspect your CPU chip is dying.

 

If you know how to tinker with over clocking the CPU, you can try this:

Adjust the VCore voltage. Google for your CPU chip to see what voltage it uses. If your CPU VCore is 1.35V, you can increase the voltage to 1.36V or 1.37V to see if it solves the issue.

[Lethiferous72]

15 hours ago, Chiyawa said:

Looks like heat issues. But it could be the problem with the CPU chip.

 

Also, how's the voltage reading in the BIOS? Are they good (12V should be a little higher, around 12.4V)?

 

Here's what I can suggest to you:

Can you push your heat sink down to see if it is at the very end of the CPU?

Do you have a spare CPU chip? I suspect your CPU chip is dying.

 

If you know how to tinker with over clocking the CPU, you can try this:

Adjust the VCore voltage. Google for your CPU chip to see what voltage it uses. If your CPU VCore is 1.35V, you can increase the voltage to 1.36V or 1.37V to see if it solves the issue.

I understand where you are going with this,  but I managed to enter the bios only once and saw that it reads all the components normally,  the cpu temperature is where it needs to be at 23-24C,  it cant be overheating. Listen PC is from 2016 but it hasnt been used all the time nor messed with the components that much. So its like brand new I wouldnt point my finger to the cpu chip,  rhis looks to me as few things:

 

1. I got new psu that is faulty. 

2. Not enough power from psu,  but I dont believe in that since I only have a cpu and 1 gpu,  so 400-500w would do,  I have 650w from corsair.

3. Bad connection or shortage somewhere. 

 

 

The way I plan to attack this problem is this. 

 

I will mount the old pau back,  if it boots like it used to,  that tells me the new psu is faulty.  If it doesnt,  well then... I am planning to check the toshiba hard drive,  ram and cables.  If all fails,  fuck it i will need a new gpu/cpu or motherboard and by the looks of this I will probably need to buy a new pc since those parts will cost me the same as a new brand pc,  so I pray I will bypass this situation allaround. 

[Chiyawa]

I see. Sorry to hear that.

 

Anyway, just a quick heads up. If possible, remove your motherboard from your system. I once come across of a system that fails to start (even changing to a known working PSU and it still fails to boot). When I remove the motherboard, there is one dead spider (a tiny one) with two of its leg shorted one of the power transistor at the back of the motherboard. Unfortunately, the motherboard fried, and I have to replace one.

[Lethiferous72]

14 hours ago, Chiyawa said:

I see. Sorry to hear that.

 

Anyway, just a quick heads up. If possible, remove your motherboard from your system. I once come across of a system that fails to start (even changing to a known working PSU and it still fails to boot). When I remove the motherboard, there is one dead spider (a tiny one) with two of its leg shorted one of the power transistor at the back of the motherboard. Unfortunately, the motherboard fried, and I have to replace one.

UPDATE: I have mounted my old psu again and it booted up as it used to, I tried to put it on load to see if it will crash again and it did, so this tells me that psu is not powerful enough anymore to give high loads of power, also I have noticed in bios the the power it reads is 1.112W, shouldnt it need to be atleast 1.2W to work properly? 

[Chiyawa]

Which power? Do you have a screenshot (or picture)?