The computer is on the ground ~ because it's very wet these days ~ Now the host computer has a "Didi" power supply, and the CPU graphics fans are all on ~ but there is no signal on the display.

Obviously, it is because the motherboard or the motherboard battery is under-discharged. Take out the battery of the motherboard, touch the positive and negative electrodes with your hands or discharge the motherboard with a metal object before pressing the battery. At first, it will start, then automatically turn off for 2 seconds, and then automatically turn on. But you have to press F 1 to enter the system. If you don't care about the time on the computer, you can remove the battery, and there will be no turning on or off in the future, but your computer time will always be zero. It definitely works. That's my computer.