I have a new GPU – ASUS Geforce GT640 – which doesn't require (or have connector) for separate power supply, however when plugged into a HP XW4600 the machine fails to boot – 4 beeps in a cycle.
I didn't spec this, the person that did assumed the PSU wasn't up to it, so purchased a 750W replacement, however this doesn't make any difference.
The XW4600 Mainboard has printed on: SLOT2 PCIe2 x16 75w + 75w, so I'm guessing the PCIe bus can't deliver enough power to the GPU – is there any workaround for this?
Could the fan connector be disconnected and reconnected to some sort of PSU adapter rather than from the BUS?
Best Answer
I know this is ancient, but this isn't a power problem, HP crippled the bios in these and nvidia cards newer than the 5xx series will not post.