For several days, when you turn on the computer, it's black screen. It shows that VGA has no signal input, and then the monitor goes into sleep. What should I do?
First find out whether the line is not connected, if the line is good, then change the monitor to try, if you change the monitor, regardless of the use, you can basically determine the graphics card problem
This phenomenon indicates that your host has not started properlyCheck hostDust removal, motherboard discharge, memory interpolation
This phenomenon has several possible: 1, VGA signal line fault; 2, video card failure; 3, memory failure; 4, motherboard or CPU fault;Now I'm going to talk about how to determine the fault point.First of all, listen to the boot, there is no motherboard issued "drop" sound (about 5-6 seconds on the host power on), this is the motherboard self-test sound, if there is this sound, indicating: memory, motherboard or CPU normal. It is the fault signal line or VGA card, and then change the VGA line (which is good for all, before their joint line re inserted, not bad connections caused), if not make sure the connection problem, or not, so that the problem is the graphics, you pull down the video card, a rub with the eraser "Goldfinger" inserted again, look at how to determine in all the socket no problem, if the fault still, then the graphics card is bad;Back to the front, if the boot is not heard "drop" the sound of the self noise, then, below you will first pull down the memory, a rub with the eraser "Goldfinger" inserted again, with a dry dust cleaning brush and other components on the motherboard (the slot for cleaning up the key), after this step. The boot, if the fault still, so the next step, you unplug the memory, start the machine (let the machine with no memory, if appear, start) memory fault alarm alarm (different BIOS chip: the Award is constantly sound, AMI is the 1 long 3 short...... There are other types, according to the BIOS chip you check the Internet) so that the motherboard or CPU is good; if, unplug the memory to start is no alarm sound, basically can be judged for the motherboard failure.These are some basic methods of judgment, do not rule out the special circumstances, because you describe the details of the fault is not clear, nor can you personally detect your machine, only this way, generally speaking to you, you first try it.
