HP ProOne 400 G2 20-inch Touch All-in-One PC BIOS 6050A2716601.A01 N13_0216_16MB.bin HP ProOne 400 G2 20-inch Non-Touch All-in-One PC N13
i have old bios check is it ok there is on proper but display not comes. on your bios is not power on proper.. please check and clear bios.