Please check this PSU's specs, any good?

my pc have been shutting down randomly a lot recently... i thought it was some short circuit, i raised the whole board off the back of the case with additional screws, and i added plastic rings on the screws to avoid any contact between them and the mainboard.

sometimes it wont start. i turn it on by pressing the power button. it launches up momentarily then shuts down and launches again and etc. .... then after around 5 cycles of these it goes to Post but claims "the overclock failed" (though it worked before countless times even with higher values). and even with no OC it does that on-off thing and with no particular reason it turns on randomly.

i tried different combinations of ram sticks, no use.

i found some people on the net claiming that this can occur due to something called "motherboard hard cycle".

long story short what the hell is going on