Question: Video signal missing in new build?
Question: Video signal missing in new build?
Shortly before Christmas I chose to assemble a PC for my nephew and ordered the components online in late December. After setting everything up, I’m still not receiving a video signal.
The main parts are:
Motherboard: MSI B850M Mortar WIFIBB
GPU: VGA Radeon RX 9060XT (16GB)
CPU: AMD Ryzen 5 7500X3D
PSU: 650W be quiet! Pure Power 13M Modular 80+ Gold
RAM: Patriot VIPER VENOM 32GB (2 x 16GB) DDR5DDR
For troubleshooting I took out the GPU, reinserted the RAM, and verified the slots. When I removed the RAM and restarted without it, no audio signal appeared, which most boards should provide.
This is my first experience with a modular PSU and I noticed the board has two separate CPU power connectors. The PSU only offers one CPU connector and should supply sufficient power for the system, so I used just one. Could it be that the motherboard needs both connectors? Is there an issue with the mainboard itself?
I’m currently stuck and unsure how to proceed further.
Welcome to the forums, newcomer!
Motherboard: MSI B850M Mortar WIFIBB
When removing the RAM and restarting without it, I didn’t receive any audio signal, unlike most boards that do.
If this is the case, the board you’re using requires a POST speaker to be connected, since one isn’t soldered onto the PCB.
RAM: Patriot VIPER VENOM 32GB (2 x 16GB) DDR5DDR
RAM slots A2 and B2 are being filled according to the manual;
https://download-2.msi.com/archive/mnu_e...nglish.pdf
Page-9?
Regarding the 8pin EPS connectors at the top, you should be setting CPU_PWR1. If you were working with a...
Welcome to the forums, newcomer!
The motherboard in question is an MSI B850M Mortar WIFIBB.
When removing RAM and restarting without it, I didn’t receive any audio notification, which most systems provide by default.
If the link https://www.msi.com/Motherboard/MAG-B850M-MORTAR-WIFI applies to your setup, ensure the board includes a POST speaker, as it lacks one soldered onto the PCB.
RAM: Patriot VIPER VENOM 32GB (2 x 16GB) DDR5DDR
The RAM slots A2 and B2 should be filled according to the manual;
https://download-2.msi.com/archive/mnu_e...nglish.pdf
Page-9?
Regarding the 8pin EPS connectors at the top, you should fill CPU_PWR1. For more powerful processors or high overclocking attempts, consider also populating CPU_PWR2.
It would be wise to check the CPU socket for any bent or damaged pins. Speaking of sockets, what cooling solution are you using?
Assuming the board you referenced is correct, the rear panel features a BIOS Flash button. Attempt to update the BIOS with a newer version that matches;
https://www.msi.com/Motherboard/MAG-B850...pport#bios
This guide should help. You can also watch: https://www.youtube.com/watch?v=38URrpCA4RE
Even though the boards differ, the general approach stays consistent.
Often a single 8 pin connector is sufficient unless you're performing advanced overclocking. Since your CPU isn't powerful, I doubt you need more than one.
To verify it's the GPU rather than the CPU or memory, check the upper right area of the board for color. You should see red (CPU), yellow (memory), white (GPU), or green (should be in post). What shade appears?
If Yellow or White:
Disconnect your GPU and rely on built-in graphics. The 7500x3d model supports this. Also, take out one RAM stick. If that resolves the issue, good luck. You might need to update your BIOS (access it and check the version). If removing a RAM stick and using onboard graphics still doesn't work:
As Lutfij mentioned, updating the BIOS is advisable. I've experienced motherboards failing with multiple RAM sticks and losing display functionality—both resolved via a BIOS update. Refer to the manual for specific steps; if you can't enter BIOS, consider flashing the firmware.
Page 55 details the color codes and their locations on your motherboard:
Page 64 provides the BIOS flash instructions:
https://download-2.msi.com/archive/mnu_e...nglish.pdf
Sorry for the slow reply, I was occupied recently.
Following Lutfij's advice, I flashed the BIOS, which probably fixed the problem. The board appears to be somewhat unstable—green (boot), red (CPU), and yellow (RAM) indicators remain lit even after flashing and power cycling. While checking the manual, I kept the system running and after a short while the red and yellow lights turned off on their own. It seems the board was conducting some hardware diagnostics. After restarting it again, the BIOS loaded successfully.
Problem resolved! Thanks for the links and supportive comments from both of you!