[SOLVED] PC won't boot - case fans come on when PSU switched on even though PC isn't on?

[rallydarkstrike]

Title says it all folks - I plug in this desktop (Asrock socket 1150 mobo, Intel Core i5 CPU) and it won't boot...pushing the power button does nothing.

Yet, when I plug it in and have the power supply's own power switch set to on, even without trying to start the computer, all the case fans come on slowly...is this a sign there is a short circuit on the mobo somewhere and the mobo is likely toast?

 

[popatim]

Time to breadboard this outside of the case and see if the issue remains.
Only connect the PSU, CPU& cooler, Ram, and a GPU only if your CPU does not have built in graphics.

Does it power up now and stop at the 'No Bootable Media Detected' message ?

 

[popatim]

I gather you found the issue