If you see Detected Graphics Processor: Unable to detect information on Photoshop, it means the graphics card or processor is not detected. We have solutions to fix it.

Use the following suggestions if your graphics card is not working after a BIOS update. If power cycling does not make any effect, you can clear CMOS. For this, you have to open your computer case ...

Internal Graphics Mode Select is further described on page 31 - it has to be set to "AUTO" before a PCIE graphic card is detected and used. Do you have that set correctly in BIOS?