I've just been going through a frustrating build using a DH77ED M/B with a G860 processor. This is a fresh Windows 7 64 bit installation using an older 32GB HDD and subsequently an Intel 530 180GB SSD. I'm able to get a working system only by sticking to using the on-board video.
I've tried several different BIOS versions and every time I try installing a graphics card in the PCIe slot I get no video output on the monitor. Coincidentally, none of the graphics cards seem to be detected in BIOS. I've tried every possible combination of UEFI/legacy BIOS enabling in the BOOT section of BIOS with the same results. I've tried disabling the on-board video and setting the PEG video as the primary display, to no avail.
The graphics cards all work in a much older HP Pavilion machine, so the cards are evidently not the issue. I'm fairly certain that I'll probably need to initiate a warranty return on the M/B but I thought I'd try to get some advice here on other possible options to pursue.
H/W Info:
Processor: Intel G860
Memory: 8GB total 1600MHz DDR3 in DIMM slots 1&2
M/B: DH77EB version AAG39073-304
SSD: Intel SSD 530 180 GB (firmware updated to current)
HDD: WDC 320 GB
P/S: EVGA NEX750G
Unrecognized video cards:
EVGA GTX640 (1 GB DDR5)
HIS iSilent5 ( 2GB DDR3 )
Sapphire Radeon x1650 (512MB DDR3)
Any other suggestions or does this seem like an RMA issue?