Quote Originally Posted by wainuitech View Post
How do you know if you dont try ??

As piroska mentioned its often the case, if its not the PSU then more than likely the motherboard.

One way to tell (or test) remove the Memory completely, press the power button it should beep/ squeal complaining of no Memory.

Seen many (hundreds) of problems relating to a bad power supply, not till you actully confirm its not, you can throw out perfectly good hardware. ( All techs know this) hence usually the 1st point to test
OK, I've removed the memory and powered on and it is exactly the same - no beeps, nothing.