Hello, Over the last year i've gotten through 4 power supplys. Every now and again the computer would turn on but not do anything (blank screen). I know this is a power supply issue so I changed the power supply. I happend again yesterday, so i replaced the power supply again. But this time for some reason, the computer wont turn on (blank screen, no beeps). So changing the power supply didnt affect anyhting... Am I right in thinking the mobo is dead? The power supplys I have tried: Hiper Type R 480W OCZ Modstream 480W Thermaltake 420W Antec Power 2.0 480W (current PSU) P.S= I also bought a UPS to stop my power supplies breaking every couple of months.\ Thanks, Alex.