Laptop screen went black - can't find the cause/ solution! Hardware.The EliteDesk only has 3 DP ports for video. I'm saying I used a DVI cable with a DP-DVI adapter to connect monitor to same DP port on computer. Also, if this is a video card with it's own software stack, like an Intel, nVidia or AMD, I'd look at those settings as well and perhaps even remove those to just get back to basic video then rebuild. Is this a discrete card or video on the mobo? If so, I'd reseat the card and ensure any on-board video is disabled if possible in the BIOS. If still no luck, I'd probably also uninstall the video drivers entirely then have Windows do a hardware scan and redetect the video. See if there is anything new in there about the time this happened. Were they Windows native drivers replaced with a download from the video OEM site or PC OEM site? Try going to C:\Windows\System32\drivers and sorting in date descending order. If you have a choice between auto and manual selection of the input, manually select DP. Make sure nobody moved the original cable configuration, then verifying the monitors didn't have inputs switched. Before attempting to undo a Windows update, if it were me, I'd reconnect from the ground up checking all outs and ins. The article mentioned in the previous post sounds like a Windows update may have caused issues. Are you saying the same monitors work using the same DP input on the monitor, but by changing to DVI out on the PC? I can't recommend anything older than one previous release as new versions not only attempt to improve performance and compatibility but also vulnerabilities - anything this year would be CVE-2020-0001 or higher, for example.Īs you noted, very unlikely for BOTH cables to go bad. Just make sure BIOS/UEFI and graphics drivers are up-to-date, and same for docking station firmware. Speaking of which, are you certain that the DP cables you are using are actually VESA DP certified?:Ĭaveat: there's still always the possibility with manufacturing defects for each product in the real world, AND just because a product isn't certified doesn't mean it isn't high-quality or generally reliable. I have found that somewhat overkill, ultrapremium DisplayPort cables will usually remedy this issue, such as Club3D's DisplayPort 1.4 certified cables. Asus makes great monitors, and it *should* work, but sometimes you just never know. I've never had any issue with any HP models (ProDesk/Book and EliteDesk/Book) thru several generations and Intel and AMD CPU's, no dGPU, with HP EliteDisplay e243 and e233 monitors, as well as some older and lower-end HP monitors. I've ran into this with different HP PC's and docking stations using DisplayPort, but only with non-HP branded monitors, such as some 24" 1080P IPS Viewsonics. Happy users are important.as we all know. It may not be the perfect solution, but it works, and now that user is able to run 3 extended monitors, instead of just two that do not work through the DisplayPort ports. The adapter connects to one of the DisplayPort ports, and then I can run up to 3 HDMI connected monitors through the adapter. My solution ended up being a DisplyPort to HDMI adapter (about $50). No idea what is happening on the back side of this, but evidence points to dual DisplayPort issues.probably with the drivers. So, it appeared to me to be something wonky going on when both DisplayPort ports are used at the same time. If I only use one of the DisplayPort ports at a time, the monitor works fine.but as soon as I connect a monitor to both DisplayPort ports at the same time the video goes out again. I tested the monitors on another computer, and they worked without issue. It worked fine out of the box, but after about a month the video stopped getting to the monitors for some reason. I have an HP ProDesk 600 G3, with two integrated DisplayPort ports, that did the exact same thing.
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