Can a motherboard fry a PSU ?

[Nexesplay]

Hello,

I built a pc using a chinese motherboard (lga 1155) paired with a psu (500w), after the first boot the psu died and decided to use another (600w) one and now its fried too..

Did this motherboard kill my 2 psus or did the multiple pressing of (on) and (off) a lot do it ?

[TheGlenlivet]

Could be.  I have had PSUs fail at the first boot too, but it was the PSU not the motherboard.

It's possible for it to be the other way though. 

Especially with motherboard of dubious origin.....

[Sir0Tek]

I don't know what psu's you have but if there's a short on the mainboard or somewhere else that forces the psu to shut-down then usually it is not dead. You should take it off the power-source, wait some time and put it back to work - but maybe not with the same board.

[Fasauceome]

given the fact that you're not specifying what PSUs you're buying, you could just be buying crappy cheapo units that don't last

[Nexesplay]

1- yes im using crappy-ish psus but they lasted for along time on another rig

 

2- when i build the system outside the case, it worked (got bios ect..) then when i put in the case psu dies, happened to the 500 and 600w one 

Maybe the case shorting my motherboard thus killing psu ?

[tdkid]

sounds like your PSUs work fine. you probably have a short somewhere that is causing them to power down as they are designed to do to prevent a fire even crappy ones.