Gateway DX4200 AMD Phenom 9550 Quad Core (Fox Bengal motherboard) Orig PSU LiteOn 300w Replacement PSU Trust 370w Definately a novice here so any advice will definately be appreciated. I relocated to the UK from US. Switched the PSU from 115 to 240 but for whatever reason (i don't think the toggle had completely slid to the 240 position). I burnt out the PSU at the capacitors. I have replaced the original 300w PSU with a 370w. The original PSU had the 4pin cpu +12v connector with a max output of 13A. The new PSU max is 15a. The amps may or may not be important but this lead seems to be the epicenter of my current predicament. Here is the problem: when connecting the 4 pin lead the system led light comes on and is attempting to power up, the cpu and case fans engage but it quickly goes off. I can hold the power button on but it will only turn on and off and only runs for about a second each attempt. if the 12v is not connected, but I leave the 24 pin lead connected, the led light indicates that it is in sleep or standby. in either case, their seems to be no boot up at all. there is no signal being sent to the monitor to indicate activity at the motherboard or even that the bios is booting. Have I fried the motherboard?