Well, hope someone can help me here. Even though my system is protected by a surge protector, a blackout screwed my system. I couldn't get any the PC to power on. The PSU's light was blinking. So, before I got another PSU, I dug out my 10 year old PIII system and hooked up the PSU to it. It worked, so I assumed it was the MOBO that crapped out. I ordered a new MOBO and CPU (decided to upgrade) from Newegg. Contacted HP to obtain instructions for tattooing the board (BTW - HP's tech support guys are *****s!!! One told me that I can get the new MOBO tattooed and later, AFTER I ordered my new MOBO, another told me that I had to buy a new MOBO from them!!! AT 4X the COST!!!) Anyways, I got a tattoo utility to do it myself (if anyone wants it, let me know, I think I can probably e-mail it, it's pretty small program). Well, got the MOBO & CPU in and rebuilt my PC. Now, when I hook up the PSU, I GET THE SAME PROBLEM....PC does not power up and the light on the PSU blinks!!! What are the chances that the MOBO was a dud? I plugged the PSU back to my old system and it works...I'm using it to write this now. I tried to "shock" the PSU to no avail. I don't know what else it could be? Could the PSU's out put have dropped? The power requirements for my old PC is much lower than the new one. I need help from anyone out there that has had a similar situation or knows what the hell is going on! HELP!!!!