My computer... automatic on after switching on the AVR

[MrKobe]

i just using my computer early, suddenly the AVR was blown up., i replaced the new AVR, but after plug-in, my computer doesn't power on..so i replaced the PSU, with new one..after setting up, my computer automatic ON after switchin ON the AVR..the CPU Fan spining, no beeps, no display...

i tried running my MB out of its casing, only with processor..same problem
automatic ON after switching ON of AVR..

what seems to be the problem..any idea to fix it.