New build issues – missing screen, automatic restart, and Debug LEDs changing?
New build issues – missing screen, automatic restart, and Debug LEDs changing?
Here’s my current setup:
The initial three parts are fresh:
PSU: MSI MPG A550BN ATX
Motherboard: MSI PRO B760M-P DDR4
CPU: Intel Core i5-13400F (2.5 GHz)
RAM: 32 GB Ballistix (2x16 GB)
Storage: Two SSDs, not yet installed
GPU: Sapphire (model not specified)
Monitor: GamePower (functional on laptop)
I removed one RAM module to test, but the problem continues.
Issue:
After installing everything, on the first start-up the system briefly displays a debug light sequence (white → red → black?) before restarting automatically.
On the second start-up, only white, yellow, and green debug LEDs illuminate and remain active.
No output appears on the screen via HDMI or DisplayPort; the monitor remains in sleep mode.
I reset CMOS using a screwdriver on the JBAT1 pins as instructed in the official MSI guide. I disconnected power, briefly connected JBAT1 with the tool for 10 seconds, then reconnected and restarted — but no improvement was observed.
I also attempted booting with and without an Ubuntu USB drive. When the USB is connected, the final LED stays white, indicating “no VGA detected.” Removing the USB changes the sequence slightly but still results in no display.
Additional Observations:
The PC operated normally at the shop before, so it’s possible damage occurred during shipping.
I’m using the original cables supplied with the PSU.
Unfortunately, I lack another monitor for straightforward testing.
I tested both HDMI and DisplayPort ports, but neither functioned.
Questions:
- Why does the system restart immediately after power-on?
- Could the problem stem from the GPU, PSU, or motherboard?
- Is this a recognized issue with the MSI PRO B760M-P DDR4 and i5-13400F?
- Any recommendations for further troubleshooting?
Photos: https://ibb.co/FqYKv92J
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https://ibb.co/FqYKv92J
When sharing a troubleshooting thread, it's important to provide complete system details. List your specifications as follows:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
Include the PSU age along with its make and model. BIOS version for your motherboard at this time. As you've changed components, please share before and after your specs.
https://download-2.msi.com/archive/mnu_e...-PDDR4.pdf
Page 39: green LED means no boot drive present on the board.
I don't have a boot because I didn't install any SSD. First I want to check the BIOS screen. Now I can't see anything. All fans are spinning. There are 3 parts, they're new and 0 years old. CPU, PSU, MB.
PSU: MSI MPG A550BN ATX PC
Motherboard: MSI PRO B760M-P DDR4
CPU: Intel Core i5-13400F 2.5 GHz
RAM: 32 GB Ballistix RAM (2x16GB)
Storage: 2 SSDs but not installed
GPU: I forgot the model but I think it's okay.
Monitor: gamepower
I also removed one RAM but it worked the same.
At the computer shop, I saw it was working in display mode. So maybe the issue is with the monitor or something broke when I brought it home? He couldn't think about using it over HDMI.
I returned to the pc shop again and worked there once more!
I used my power cable, so that wasn't the main issue. I think there are two chances here.
1. My display cable is damaged.
2. Initially, it only worked with VGA after setup.
Since the shop's monitor uses VGA, it can display properly without an SSD. I also tried USB and saw the Ubuntu menu.
We couldn't test my display cable because it uses VGA. My motherboard has VGA, but I suspect the CPU prevents an integrated VGA.
HDMI didn’t work either. Previously, HDMI worked with the same cable, though on a different system—probably an older one. Now, using that HDMI cable with the laptop works.
What I can do now is try buying a new display cable to confirm if it’s broken. If not, I’ll need a VGA monitor and a VGA display changer.
I also read somewhere that initially only VGA was supported, but I couldn’t find more details.
What are your thoughts?
Updated: today i went to friend. He has 2 monitors, samsung and rampage, both gave display! With my cable, his cable. dp or hdmi. both worked. This makes me think it’s about this monitor that isn’t compatible with the bios or gpu. But before that, with the same gpu i could use this monitor too. Now i’m using that monitor with that laptop. I put ssd and installed ubuntu as well. Tomorrow a hdmi converter should arrive from my order. I’ll try it first to connect. If that doesn’t work, I don’t know what else to do except buy a new monitor.
Div to hdmi arrived and it worked, though the resolution is quite low. I don't remember if it was different with HDMI. It displays dual, but likely not dual. Perhaps a better cable would improve the results? I can check the BIOS for settings or an update. The GPU fan isn't spinning—I didn't notice it before, but the video showed it stopped. https://ibb.co/HfPgZ8w4
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After numerous troubleshooting steps, I successfully resolved the display issue. The problem was connected to the AMD GPU drivers on my radeon 400 series card.
💡 What Was the Problem?
My setup failed to show anything through HDMI or DP after connecting the GPU. At first, I suspected a hardware or BIOS fault, but the real cause was a driver issue.
🔧 How I Fixed It:
Turned off Secure Boot in BIOS to permit third-party drivers.
Installed the newest AMD drivers using these commands:
sudo add-apt-repository ppa
CopyEdit
sql
sudo apt update
sudo apt install xserver-xorg-video-amdgpu
I also downloaded additional packages from the official AMD website as .deb files and installed them.
After restarting, both HDMI and DP functions worked properly.
Testing with a monitor connected via HDMI 1 and HDMI 2 confirmed everything was operational.
📝 Takeaway:
For similar problems, ensure you:
Disable Secure Boot in BIOS.
Use the official AMD drivers from the PPA.
Try connecting through different ports (HDMI 1, HDMI 2, DP) post-installation.
This should help anyone dealing with comparable GPU display challenges!