Critical: Lenovo Legion 15ARH7H display and graphics problems reported
Critical: Lenovo Legion 15ARH7H display and graphics problems reported
I bought a brand-new Lenovo Legion 15ARH7H about two weeks ago. The onboard LCD stopped working, and I found the LCD inverter overheating. It doesn’t show up in Device Manager. I tried swapping it with a similar 40-pin display, but the problem continues. I can’t access the BIOS because the system always boots with the onboard Radeon GPU, so nothing on the display works. Now Windows only uses the NVIDIA GPU, and the inboard screen is completely dead. I can’t boot into BIOS or run any tests. Could you help figure out the cause? Is this a hardware issue or something with the settings? Any advice on troubleshooting would be appreciated. Thanks!
The ship could have been modified as OP suggested, which might affect warranty coverage. Even if it's new, the age of the model and its outdated GPU could make it hard to sell through standard channels. The current iGPU might not show up in Windows, especially if the BIOS differs from yours. Disabling it could help if the laptop uses an output multiplexer, allowing direct use of the internal screen. You may need to look up the necessary BIOS settings and consider updating the BIOS or checking for a BIOS update from Lenovo. The Lenovo Vantage tool can assist, and it might also be available via Windows Update unless blocked.
Honestly, my old Lenovo Legion 7 was a total mess. The fans broke, and when I attempted a replacement, static shock fried the motherboard—hard lesson. That’s why I went with this model instead. I kept my old SSD because I didn’t want to move data, but that shouldn’t have been a big deal. The warranty was already up, so fixing it myself wouldn’t be cheap. I thought I could handle the LCD myself, but it won’t turn on at all. Now I’m scrambling to figure out if the problem lies with the display cable, the tiny camera board beneath, or something else. Right now I’m really confused about what’s wrong and how to fix it, especially since I upgraded the firmware and still got no display.
I changed the LCD, but the problem continues. I’m trying to figure out if the issue lies with the display cable or the camera board beneath the screen. Because all GPUs show up once the OS starts, it seems they’re working correctly, which would mean the GPU or motherboard display controller isn’t the cause. That makes it less likely a hardware failure there. Would you agree? Right now I can’t fix anything since the built-in screen doesn’t appear at all.
Possible reasons:
1. **Display cable or camera board is damaged** – A broken cable or unstable power path might stop the system from starting.
2. **BIOS loading issues** – The hardware might not be initializing properly, even though GPUs appear in Windows.
3. **Camera board function** – If the camera board has a display-loading feature, it could be interfering.