PC wont Turn on (PSU)

[ChrisRipp]

Hi People!

I come to you this time because i need help with a frustrating problem with my new build, and the problem is:

Few das ago i disconected my computer to install a new HDD and apply some thermal paste to the cpu, everything was ok for just one day when i found my PC turned off (i was away for a few mins and wasnt electrical failure) and when i turn on the pc it turned of auto and wont turn on again, just after i turned off/on the psu i could star os normaly... but after a few mins i got a message from the mobo saying "WARNING +3.3V voltage 3.672V" after that few mins later the pc turned off and wont start again...

I tried checking the connections and everything looks ok, even the leds from the mobo and gpu are turned on... but wont turn the PC, also tried the paper clip to test PSU and its ok...

Please help!! i dont know what to do, i'm a noob on hardware PC so theres maybe something more to to do beyond my knowledge



System Specs: (EVERYTHING ITS NEW from december 2014)

CPU: AMD Phenom II 960T (Stock)
MB: Asus Crosshair Formula Z
RAM: Gskill Sniper 1866mhz 16GB
GPU: Asus R9 290 Direct CU II
PSU: XFX Black Edition 850w
Main Disk: Samsung 840evo 250gb
2nd Disk: Seagate Barracuda 1TB
3rd Disk: Westerd Digital Caviar Blue 320gb
external disk: Western Digital MyPassport 1TB
OS: Windows 7 64bit Ultimate Edition

 

[Tradesman1]

Do you have a different PSU you could try, sounds like yours may be headed south

 

[ChrisRipp]

well, i reassembled the computer and then... it works again, everything normal so far, i dont really knows what happened there.

 

[Dashing_star]

glad to hear everything is fine