if the video display is normal and the video display is plugged in, then try to block the * * * shared cache in COMS(BIOS) first, because the integrated graphics card needs to borrow some memory to be used as the video memory, and the video memory of the * * * shared cache is out of sync with the video memory of the video display, resulting in the video display, but the video display is usually the video memory or there is something wrong with the memory.

you can jump wire discharge on the motherboard COMS, or set aside button cell for a few minutes to restore the factory settings of the BIOS. First, remove all hardware accessories and then reinstall them. Just use an eraser to wipe the golden finger, scrape the slot with something like a credit card, and use a brush to remove dust on the circuit board. If it still doesn't work, it may be that the graphics card itself has a hardware failure. Take it back to the merchant and try it. Is it a problem with the graphics card itself or a compatibility problem?

finally, I wish you an early and successful solution to the problem.