So I just bought a R7 260X off the trade forums and give it a crack. System were running fine beforehand but when I chuck the card in and turn it on it would turn on as usual but would not POST (no display). Normally with my previous setup when I turn on my PC the light on my mouse and numlock turns on (assuming this is POST) and it boots but with the 260X the system turns on but neither light (mouse and numlock) turn on. Curious so I decided to unplug the 6 pins on the GPU to see what happens. Surprisingly the system boot and POST. I entered BIOS but for some reason it doesn't detect anything in the PCI E slot. My suspect is that the PSU is not supplying enough power or dodgy graphics card. Have anyone experience this before? What would happens if the PSU is over powered? Unfortunately I don't have any spare parts around to do further test but thought might post this to see if anyone have experience this before and to confirm before spending money buying the wrong part. Specs: Motherboard: Intel DH61WW CPU: G630 Pentium GPU: XFX 4350 --> R7 260X PSU: Generic ATX620 Click to view full size!