PC power supply problem

[Wyse82]

Hi! Sometimes , when i press power button nothing happens so i have to turn off psu button and then turn it on , which automaticly turns on pc.
Sometimes when i press power button, i hear fans spinning , but lights aren't on and i don't get POST or any kind of sign. Whats your opinion?

 

[Cristi72]

Hello,

If you have a fairly new PC, it could be the PSU. For an older system, in addition to a PSU problem it could be a problem with the motherboard.

 

[Wyse82]

How can i be sure what it is?

 

[Cristi72]

Please list your computer configuration as detailed as possible, and especially the PSU's and motherboard's manufacturer.

 

[Wyse82]

Please list your computer configuration as detailed as possible, and especially the PSU's and motherboard's manufacturer.

here you go: Windows 7 ultimate, ms-7388, amd athlon X2 64 dual core 6000+ 3ghz, 2gb x 2 RAM, nvidia geforce 9800 gt gainward, psu atx 12 v
Besides this problem Im encounting another: pc all of a sudden starts stuttering(both audio and video). It happens often and its driving me crazy. I remember one thing ive done before this started> i opened up the case to clean the pc and just unscrewed and lifted cpu cooler a bit, then i put it back. I ve noticed that processes happen,games run perfeclty though but video is stuttering, and sometimes sound too. Update: ive noticed that the sound doesn't stutter anymore. Mouse cursor doesn;t stutter at all. So i guess its only video. I tried updating gpu driver and disabling it, but no progress.

 

[Cristi72]

Please list your computer configuration as detailed as possible, and especially the PSU's and motherboard's manufacturer.

here you go: Windows 7 ultimate, ms-7388, amd athlon X2 64 dual core 6000+ 3ghz, 2gb x 2 RAM, nvidia geforce 9800 gt gainward, psu atx 12 v
Besides this problem Im encounting another: pc all of a sudden starts stuttering(both audio and video). It happens often and its driving me crazy. I remember one thing ive done before this started> i opened up the case to clean the pc and just unscrewed and lifted cpu cooler a bit, then i put it back. I ve noticed that processes happen,games run perfeclty though but video is stuttering, and sometimes sound too. Update: ive noticed that the sound doesn't stutter anymore. Mouse cursor doesn;t stutter at all. So i guess its only video. I tried updating gpu driver and disabling it, but no progress.

Your system is at least 6 years old. It could be mobo, PSU or GPU, or all together (less likely though...).

Starting with the PSU, that PSU should have at least 400W with a minimum of 25 Amps on +12V rail and to be from a well-known manufacturer (Seasonic, XFX, Antec, Corsair, etc) to be sure that all those years didn't led to big power degradation (you should have a sticker on the one side of the PSU where you should find the conpany's name and technical data such as total power and amperage on each rail [+3,3V, +5V, +12V]).

As the mobo/CPU goes, please visually inspect the CPU/GPU/RAM surroundings. If you will see some blown-up capacitors (do a web search for "bulging capacitors") then your board is living its last hours; you could have the same problem with the PSU or the GPU by the way.

If all is visually OK, take off the cooler and the CPU, re-seat the CPU in its socket, clean the CPU and the cooler, reapply the thermal paste and mount back the cooler. When working, what are the temps for CPU/GPU?

For GPU, the best way is to test it using a friend's system, or to borrow another video card.

EDIT: I just checked the layout of your motherboard and it has the newer generation of capacitors, the ones with solid electrolyte, which do not generate that flagrant bulging effect when going bad, and make the diagnose harder... Your best bet right now is to try an other PSU and see if it changes anything.

 

[Wyse82]

Please list your computer configuration as detailed as possible, and especially the PSU's and motherboard's manufacturer.

here you go: Windows 7 ultimate, ms-7388, amd athlon X2 64 dual core 6000+ 3ghz, 2gb x 2 RAM, nvidia geforce 9800 gt gainward, psu atx 12 v
Besides this problem Im encounting another: pc all of a sudden starts stuttering(both audio and video). It happens often and its driving me crazy. I remember one thing ive done before this started> i opened up the case to clean the pc and just unscrewed and lifted cpu cooler a bit, then i put it back. I ve noticed that processes happen,games run perfeclty though but video is stuttering, and sometimes sound too. Update: ive noticed that the sound doesn't stutter anymore. Mouse cursor doesn;t stutter at all. So i guess its only video. I tried updating gpu driver and disabling it, but no progress.

Your system is at least 6 years old. It could be mobo, PSU or GPU, or all together (less likely though...).

Starting with the PSU, that PSU should have at least 400W with a minimum of 25 Amps on +12V rail and to be from a well-known manufacturer (Seasonic, XFX, Antec, Corsair, etc) to be sure that all those years didn't led to big power degradation (you should have a sticker on the one side of the PSU where you should find the conpany's name and technical data such as total power and amperage on each rail [+3,3V, +5V, +12V]).

As the mobo/CPU goes, please visually inspect the CPU/GPU/RAM surroundings. If you will see some blown-up capacitors (do a web search for "bulging capacitors") then your board is living its last hours; you could have the same problem with the PSU or the GPU by the way.

If all is visually OK, take off the cooler and the CPU, re-seat the CPU in its socket, clean the CPU and the cooler, reapply the thermal paste and mount back the cooler. When working, what are the temps for CPU/GPU?

For GPU, the best way is to test it using a friend's system, or to borrow another video card.

EDIT: I just checked the layout of your motherboard and it has the newer generation of capacitors, the ones with solid electrolyte, which do not generate that flagrant bulging effect when going bad, and make the diagnose harder... Your best bet right now is to try an other PSU and see if it changes anything.

So i changed the termal paste and messed around with cooler and it seems its solution. I haven't encountered the problem 36hrs. Im not sure if the problem is totally gone, but keep fingers crossed. Sir, thank you very much!