I need a little help please

[NarcoGamer]

i left the pc on while i was on vacation. i came back, it was off. i tried turning it on, dosent work. i tried turning on and off the psu, i get lights on the mobo and gpu that they have power, but when i push the power button (on the case and motherboard tried both) i hear i short click, and then nothing. the fans dont turn on, nothing does. my pc is a i7 4770k, maximus VI hero, m12II 620w, 8gb crucial ram and a gtx 770. it was working perfectly for 6 months, but now i dont know what happened. i tried switching the power cables. i dont know what to do. help me please
Update : when i took out the gpu the pc turned on (by pc i mean the fans , cpu cooler, drives, the q code light. its showing 00). tried putting the gpu in, dosent wanna turn on. after i while i tried again with the gpu, turned on, but no video on VGA. what do i do now ?

 

[Somber]

Sorry to hear idk im commenting to bump for you.

 

[FireDragon]

Hey NarcoGamer, I think your PSU makes a problem there.
Depending on how much days you were on your vacation (I assume at least for a week) your PC was working 24/7 for that time.
Probably something happened to your PSU during it, because if it turns on the PC without a GPU then everything else is fine.
Try putting a AMD GPU first. AMD GPUs don't need too much power to run compared to Nvidia. (Borrow your friends or put a old one if you have it)
If the system turns on and Windows works normally, then the PSU is a 100% the problem and you need a new one.
I recommend getting a 600W PSU as well or even a 650/750W one, because everything lower than 600W won't run your configuration.

I hope I helped and that you will fix it soon.
Regards.