Need help A.S.A.P

[watcher]

hi. i was playing battlefield 2 yesterday on my pc. suddenly i heard a loud bang and my Pc shut down.I opened the case and there was a smell above my psu like it was fried.weird thing is that the psu lamp behind the case is on but my pc wont boot up. any ideas of what this might be ? do i need another Psu or is it something else ?
thanks in advance

 

[watcher]

damnit :| kinda waited for this as the temps here in my country are 34-38 degrees on sunlight thanks for clearing this out guys.