Question Pc turns off/on repeatedly

[Milantzv]

Hello,
I have an old PC with 2gb ram and 512mb vram graphics card(windows 7 - 32 bit),very old parts in general...It worked fine over the years until last year around september i tried to boot it up, after 5 seconds it turns off then on and that would repeat until i turn it off...I didn't have a clue whats going on, looked it up on google, found some stuff about it and bought a thermal paste.Replaced the paste on the cpu and gpu and put everything back and it worked until yesterday, the same problem appeared again and i dont know what to do(should i replace the paste again?).Screen says no signal and when i take out the gpu the PC doesnt turn off...Whats the problem, what should I do?

 

[Fix_that_Glitch]

What is the cpu? Replacing thermal paste would only affect temperatures, not on off problems at start up. You could try replacing the motherboard battery, round silver looking thing on motherboard. If there are two sticks of ram try pulling one at a time and start pc. Then try with the other stick.

 

[Milantzv]

Not sure but Replacing paste worked in september, graphics card actually has 256mb ram.

MOTHERBOARD: MSI H61M-P20 (G3)
CPU: dont know exactly its celeron with around 2.4-2.8GHz, dual core, 32-bit
RAM: Silicon Power SP002GBLTU133V02 DDR3 1333MHz, one stick
GPU: NVidia Geforce 8600 GTS
PSU: Rhino RX-500PA

 

[Fix_that_Glitch]

Replacing thermal paste may have moved the graphics card around enough to keep it going for some other reason. Try plugging the monitor directly into the motherboard and see if it will fire up.

 

[SkyNetRising]

GPU: NVidia Geforce 8600 GTS
PSU: Rhino RX-500PA

Garbage PSU.
It's closer to 150W (not 500W).
Replace it.

GTS 8600 requires minimum 250W PSU.

 

[Milantzv]

Tried it, did nothing

 

[Milantzv]

Garbage PSU.
It's closer to 150W (not 500W).
Replace it.

GTS 8600 requires minimum 250W PSU.

You reckon only replacing psu will solve this?

 

[SkyNetRising]

You reckon only replacing psu will solve this?

It's possible.
Just replace it with a good quality unit (not the same garbage).

 

[SkyNetRising]

Try plugging the monitor directly into the motherboard and see if it will fire up.

Tried it, did nothing

Discrete graphics card has to be physically removed, if you want to use integrated GPU.
With discrete GPU present integrated GPU gets disabled automatically (it has to be manually enabled in BIOS to be usable then).

 

[Milantzv]

Took out the gpu, plugged vga cable in the motherboard and it still said no signal and started turning on and off

 

[SkyNetRising]

Took out the gpu, plugged vga cable in the motherboard and it still said no signal and started turning on and off

Failing PSU or failing motherboard.
My bet - on bad PSU.

 

[Milantzv]

Failing PSU or failing motherboard.
My bet - on bad PSU.

psu worked for 7 years🥲
Do you know why changing paste fixed this problem last year and can you recommend the cheapest psu that should work and be safe

 

[SkyNetRising]

psu worked for 7 years🥲
Do you know why changing paste fixed this problem last year and can you recommend the cheapest psu that should work and be safe

PSU was garbage in the beginning already.
PSUs deteriorate over time. Now it can't even support your low end system anymore.

Changing paste probably had no relation with temporary working of your system.

How much are you ready to spend on a new PSU?

 

[DSzymborski]

That PSU is scary. It might not be the problem here, but it's hard to tell with a junk PSU in the mix.

It might not be worth spending $60 on a PSU as the whole PC isn't worth that much; you'll have to consider your use because further repairs will cost money.

 

[Milantzv]

PSU was garbage in the beginning already.
PSUs deteriorate over time. Now it can't even support your low end system anymore.

Changing paste probably had no relation with temporary working of your system.

How much are you ready to spend on a new PSU?

Cheapest possible, if this one worked 7 years surely i dont have to spend much

 

[Milantzv]

Cheapest possible, if this one worked 7 years surely i dont have to spend much

Could i get away with any of these:

https://gigatron.rs/napajanja/stars-solution-napajanje-570w-364431

https://gigatron.rs/napajanja/ms-industrial-napajanje-ms500-84979

https://gigatron.rs/napajanja/mission-q-napajanje-400w-148639

Its not on English but i think you can understand the specs.

 

[SkyNetRising]

Could i get away with any of these:
https://gigatron.rs/napajanja/stars-solution-napajanje-570w-364431
https://gigatron.rs/napajanja/ms-industrial-napajanje-ms500-84979
https://gigatron.rs/napajanja/mission-q-napajanje-400w-148639
Its not on English but i think you can understand the specs.

Same garbage. Increase your budget at least 3x.

These would be ok options.
Good quality PSU you'll be able to reuse in your next build.

https://gigatron.rs/napajanja/corsair-napajanje-450w-cx450m-cp-9020219-eu-451314

https://gigatron.rs/napajanja/fsp-napajanje-hexa+-pro-500w-ppa5008500-402836

 

[DSzymborski]

Cheapest possible, if this one worked 7 years surely i dont have to spend much

"Didn't blow up" doesn't mean "working properly."

Would you go to a cardiologist who can only diagnose your heart's health by whether you're dead or not?

"Well, you're alive, so eating a pound of bacon every day for breakfast apparently worked fine."

 

[Fix_that_Glitch]

Discrete graphics card has to be physically removed, if you want to use integrated GPU.
With discrete GPU present integrated GPU gets disabled automatically (it has to be manually enabled in BIOS to be usable then).

Yeah I read it as he took out gpu and it wouldn't shut off and that is where he was at.