Last night all the parts I ordered for a new computer came, so I built it, powered it up and it worked fine, so I installed windows, then the drivers. Next it needed service pack 3 and I needed to go out, so I set it downloading it, came home a couple of hours later and the machine is totally unresponsive. Holding the power button wouldn't shut it down, pressing reset didn't restart it.
I switched it off at the power supply, left it a few seconds and turned it back on. The power light doesn't illuminate but all the fans start and I can hear the drives spinning up. It doesn't beep at all
There is a row of LEDs giving some basic POST info, but all the manual says it that LED 1 lighting up means 'CPU is in phase 1 power mode' and all four means 'CPU is in phase 4 power mode'
Mine is stuck on phase one power mode. The manual tells you no more than this; there is no troubleshooting guide so I'm really hoping someone can make some sense of this for me and make some suggestion! Bad MoBo? It's an MSI 785GM-E51