AnsweredAssumed Answered

displayport issue - black screen

Question asked by lkenneth on Jul 26, 2020
Latest reply on Sep 17, 2020 by satanael

Hello everyone.


I would appreciate some help if possible please.


I assembled a computer recently. When I plug my monitor using Displayport (on the motherboard), once it passes the BIOS page, the screen turns black (no signal). If I use the HDMI port on the motherboard instead, then there is no issue.


My build:

B450M MSI Mortar Max (Bios build 10/6/2020. The box says "AMD Ryzen 3000 desktop ready")

AMD Ryzen 5 3400G

Corsair 16GB (2x8GB) Vengeance LPX 3200MHz DDR4 RAM




I have tried:

1. used different monitors

2. used a new DP-DP cable

3. used a DVI-DP cable (with adapter)

4. used a new DVI-DP cable (without adapter)

5. Unplugged the monitor cable and its power cable, waited for a few minute then replugged

6. ensuring the DP cable is fully plugged

7. asked someone to test the RAM. He said there's no RAM issues

8. Window 10 re-install

9. ensuring the BIOS and the AMD IGPU drivers are the latest


I am wondering whether there is a CPU issue or a compatibility issue between my motherboard and CPU?

I am planning to run dual monitors, one with 4K. Therefore I would need to make the DisplayPort works.