I am having a major issue, running 2 monitors on Windows 10 - one using VGA and one using Display port.
Windows 10 does not recognise the display port adapter, or any monitor connected to this. But this is only after windows loads. (I get the Windows Loading screen on the Display Port monitor). My machine works fine on Windows 7.
I have installed the relevant drivers, including the most recent version, but this just caused my VGA monitor to become a wonderful flashing rainbow. This then causes the machine to become unusable, until you do a hard reset (You cannot view anything on the display, because of the rainbow).
When you restart the PC, and go to device settings, I get the following:
When I then go into the device properties, I get the following:
I also have a video of the 'rainbow; if this is appropriate?
Any advice, or a fix would be much appreciated. (Dell Technical Support are no help! Even though they have stated my machine is fully workable with Windows 10).
Answers (N/A if not applicable)
Provide a detailed description of the issue AND 'does it fail every single time, or only sometimes?' If you can offer a % rate please do.
Windows 10, dual display not working through Display Port.
Brand and Model of the system.
Dell OptiPlex 3020 (Late 2013)
Hybrid or switchable graphics system? ie Does it have AMD or NV graphics too?
Make and model of any Displays that are used to see the issue (see note2 below).
LFP = Local Flat Panel (Laptop panel)
EFP = External Flat Panel (Monitor you plug in)
EFP x 2 (Dell Monitors)
How much memory [RAM] in the system (see note2 below).
Provide any other hardware needed to replicate the issue.
ie: Cables&brand, cable type [vga, hdmi, DP, etc], dock, dongles/adapters, etc
VGA x 2 + 1 x DELL DP to VGA
Hardware Stepping (see note1 below).
Operating System version (see note2 below).
Windows 10 x64
VBIOS (video BIOS) version. This can be found in “information page” of CUI (right click on Desktop and select “Graphics Properties”.
Graphics Driver version; for both integrated Intel and 3rd party vendors (see note2 below).
SW/Apps version used to replicate the issue.
Single display, clone, or extended (see note2 below).
Display resolution & refresh rate setting of each display (see note2 below).
AC or DC mode, i.e. is power cable plugged in or not?