New Asus P7P55D-E motherboard, P5-760 CPU, Sapphire ATI Radeon HD 5570 and 8GB RAM from OcUK, fitted in existing case & PSU. Classic problem: power it on and nothing happens.
The green standby LED is lit but nothing happens when I press power-on. No front panel light, no other LEDs, and not a single fan moves. (I even removed the switch connector from the Mb and tried VERY CAREFULLY shorting the two Power On pins together, but still nothing).
I wonder if it's the power connectors. My existing PSU (Jeantech 500W) says "PCI Express" on the box so I thought it would be fine. It has a 20-pin power connector and a 4-pin connector on the same main cable, which together plug in to the 24-way EATXPWR connector. The motherboard User Guide says I must also connect the 8-pin EATX12V connector (which provides +12v to the graphics card), but my PSU has only 6- and 4-way plugs. I thought the 6-way would do the job - I read that the change to 8-way was a recent change to the spec, and is only needed for high end graphics cards - but now I wonder if that's why my system won't start. Especially as I'm not sure the plug pin shapes exactly match the first 6 ways on the motherboard.
Do I need an adaptor or a new PSU, or is there something else I should try?
(Hope it's OK to post this here, I didn't post in the OcUK Customer Service forum as I don't have an RMA, as I don't want to send it all back!).
The green standby LED is lit but nothing happens when I press power-on. No front panel light, no other LEDs, and not a single fan moves. (I even removed the switch connector from the Mb and tried VERY CAREFULLY shorting the two Power On pins together, but still nothing).
I wonder if it's the power connectors. My existing PSU (Jeantech 500W) says "PCI Express" on the box so I thought it would be fine. It has a 20-pin power connector and a 4-pin connector on the same main cable, which together plug in to the 24-way EATXPWR connector. The motherboard User Guide says I must also connect the 8-pin EATX12V connector (which provides +12v to the graphics card), but my PSU has only 6- and 4-way plugs. I thought the 6-way would do the job - I read that the change to 8-way was a recent change to the spec, and is only needed for high end graphics cards - but now I wonder if that's why my system won't start. Especially as I'm not sure the plug pin shapes exactly match the first 6 ways on the motherboard.
Do I need an adaptor or a new PSU, or is there something else I should try?
(Hope it's OK to post this here, I didn't post in the OcUK Customer Service forum as I don't have an RMA, as I don't want to send it all back!).
