Power Supply question

[C4PTRI]

So i was using an antec 750w truepower classic (not sure if it's the name or not). I believe my power supply was dead because i cant power on my system even i pressed the power button. The motherboard light was green btw. I turned off everything including switching the switch at the power supply to 0 turning off the socket switches. Today when i try turning on my pc it worked again. The power button was working and everything was normal and functional. i want to ask if someone has encountered this problem before and what's the logic behind this. I am 100% sure the computer was not able to turn on two weeks ago. Thanks in advanced

 

[smorizio]

with pc the mb is just a electronic on switch. when you press the power button the power supply send a power good signal to the mb to turn on. things that can make a pc go south. the pc not fully shut off. (mb hung fans are off but the power sleep or power good light on the mb is on). seen this happen with my dad new mb. it a bios/mb glitch have to turn the power off on the power supply and every thing is fine. on older mb if the cmos battery is weak a mb wont turn on or post. power good signal is low or missing. on the power supply itself weak part or bad cap. use hardware info 64 bit set it to sensor and logging. make sure the rails are within atx spec. look at the mb and caps for leaking or swelled caps. with pc issues if it happenes once but you cant recreate it it may have been a bios lock up that you cleared when draining the power.

 

[galeener]

Could be the power supply is going bad or that you had a surge or something they are designed to shut down under certain circumstances. Turning it off and unplugging it and letting it set allowed the caps to completely drain sort of a hard reset for the psu. If it continues to happen i would think the psu is going on you.

 

[C4PTRI]

with pc the mb is just a electronic on switch. when you press the power button the power supply send a power good signal to the mb to turn on. things that can make a pc go south. the pc not fully shut off. (mb hung fans are off but the power sleep or power good light on the mb is on). seen this happen with my dad new mb. it a bios/mb glitch have to turn the power off on the power supply and every thing is fine. on older mb if the cmos battery is weak a mb wont turn on or post. power good signal is low or missing. on the power supply itself weak part or bad cap. use hardware info 64 bit set it to sensor and logging. make sure the rails are within atx spec. look at the mb and caps for leaking or swelled caps. with pc issues if it happenes once but you cant recreate it it may have been a bios lock up that you cleared when draining the power.

thanks but i just powered it on and running i am not sure if i can recreate the problem or not. I hope i dont get this problem again.

 

[C4PTRI]

Could be the power supply is going bad or that you had a surge or something they are designed to shut down under certain circumstances. Turning it off and unplugging it and letting it set allowed the caps to completely drain sort of a hard reset for the psu. If it continues to happen i would think the psu is going on you.

i will have to test it for a couple of days or weeks to test out if this happens again. But i am sure it has to do with windows update since after the update i cannot turn it back on again.