P2815Q is not recognize MiniDP or DP, only HDMI, tried everything, Surface Pro 3 he messed up?

Hi guys, currently my P2815Q monitor will not connect to multiple computers, either through mini DP (on the computer, a 3 Surface Pro plugged into the wall) DP (on the monitor) or DVI + adapter (on the computer, which has a Quadro K600 graphics card) (on the monitor) DP or DP (on the Quadro K600) to mini-DP (on the monitor).  It is not even recognized in the Device Manager on the computer and still shows the floating message "not connected".

For a while, it worked well in all of these configurations on two of these computers.  A few days ago, when it was connected to my Surface Pro 3, all of a sudden the connection dropped, and then he entered an endless loop to connect to the surface, only to disconnect immediately (after less than a second, as indicated by the "found new hardware" and "disconnected material" sounds).  My SP3 has the latest graphic drivers installed by Windows Update.  There is nothing obviously wrong with the cable.

Initially, I unplugged the monitor of the SP3, then after reading briefly on "flicker" on an external monitor with SP3 tried leaving connected for up to 30 years, nothing helped.  Also played with the ppp settings that I had put the monitor at 200%, while it worked while the SP3 is 150%.  Tried to restart the SP3 and the connection to the AC adapter / CC, etc.

Finally, the monitor stopped being recognized by the computer completely and since then I did not get the 'new hardware found' sound once when connecting it via the above ports.  However, he recognized when connected via HDMI to computers.  Once logged in so I could bring up the OSD menu, I did a factory reset, nothing helps.  I also made the image rendering test (where you hold the buttons 1 & 4) and it went perfectly.  Also tried to unplug the monitor and now the power for 5 seconds.

The first time I plugged on Quadro K600 (DP on the map, on the monitor miniDP) computer it shows briefly a picture, albeit more low resolution 4 k I had used on this computer before, then disappeared and this computer too firmly refuses to recognize...

What can I do?  It sounds like the logic board is fried?  Thank you, Caleb

Get it exchanged.

Tags: Dell Peripherals

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