Kougar wrote:I had some slightly similar issues when first building my Z87 rig. The system would POST and load Windows, but I'd only see a black screen. It turned out that for unknown reasons the motherboard was sending the video out through the 4770K's IGP instead of the GTX 480 in the main graphics slot. I don't know why but that was what it defaulted to until I disabled the 4770k's built in IGP. So in other words, next time you can't get it to show an image at boot try switching your monitor to the onboard graphics port on the back of the motherboard.
Inside the BIOS there's a setting for initial VGA output. You should set this to the main PCIe 16x slot for your system, the exact setting/names vary based on the mainboard vendor. You could even disable the onboard IGP completely and see if the problem persists. Also it doesn't hurt to make sure the graphics card PCIe connectors are clean and free of dirt, and that nothing got into the PCIe slot itself. If the issues comes back then I'd start looking elsewhere, as Brew said the PSU would be the next place I'd look.
just brew it! wrote:Even without an IGP, video cabling issues could cause it to not see the monitor.
just brew it! wrote:Try a different cable too. I've seen video cables go bad. It doesn't happen often, but it *does* happen.
Chrispy_ wrote:"device disconnect" noise and a black screen does indicate either a monitor fault or dodgy cable. The fuzzy corrupted BIOS image with another graphics card reinforces that theory, though it is just a theory.
notfred wrote:HDMI may have an audio endpoint so that unplugging may get you the device disconenct noise out of your speakers.
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