The premise: monitor, keyboard, connection line, mouse is good, the host is normal boot. There is no alarm sound, the monitor shows no signal, the keyboard has no indicator light, and the power supply, main board and memory indicator light are on. CPU, independent graphics cards, power fans are running. Separate memory and graphics card, and boot without alarm sound. The eraser has wiped the gold finger of the memory and graphics card, but it also does not show. The small battery on the motherboard has been removed for more than 5 minutes. The factory settings have been restored and the same is not shown. CPU removed, and the blower blow clean dust, the same does not show. Only one of the tests was not replaced by the CPU, the motherboard. In 2013 March there have been a host power line bitten by rats skin, and short passing, because want to go out of town, so the back has not to buy a new power line have not used the computer, who can tell me what's wrong. The monitor is good
Bad, there may be a lot of reasons: bad data lines; bad display; graphics card is bad.
Can the host run? If it drops, you can pull out your memory, wipe your fingers, and try again. Check if the monitor data line is connected to the computer. If it still doesn't show, try changing the monitor.
See if your video card is not plugged in to see if your needle is bent. Use your monitor to drive it. Try it out
1. first, verify that the display settings are correct, if the display is set in DVI mode, and the host output is VGA, it will show no signal. Remove the method, change the monitor, or operate the settings of the display to verify that the display channel is correct.2., the power cord does not affect this problem, the general computer power cord and monitor power cord is universal, you can change the test.3. to see if the motherboard with integrated graphics card, if you take, it is recommended to use the set to try.4. if there are any problems, I suggest going to the place where the computer is repaired.
