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‎02-19-2024 10:01 PM - edited ‎02-22-2024 12:04 PM

HP Recommended
Product: HP EliteDesk 705 G4 Small Form Factor PC
Operating System: Microsoft Windows 10 (64-bit)

Hello everybody!
I bought a new Radeon RX6400 graphics card to replace the stock R7 430. I chose this card because it is low profile, low power (R7 430 - 50W, RX6400 - 55W). After installation, the PC could not turn on. The power LED lights up for a few seconds and turns off. And it repeats itself all the time. I installed a stock video card, the PC booted up as always. Installed the RX6400 - reboots again. Then I reset the Bios settings. After that, the PC began to signal an error with a power indicator - 3 long red flashes, 3 short white flashes. I installed a stock video card, the situation is the same. I checked the R7 430 and RX6400 on another computer - they work fine. But my computer doesn't work with any of the cards anymore. I tried resetting the Bios settings again, but the situation does not change.
The PC stopped booting with the stock card after resetting the Bios settings.

I checked the voltages on the connector PCIE, everything is fine.
Please help me solve the problem.

1 person had the same question
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