Display shows “no signal”

Host is running all of a sudden showed no signal the resumption still shows no signal, it seems that the normal operation of the host.After a period of time, the boot, the boot-up screen will display a running system, but are slower than usual response.Even if the normal desktop display Soon after the beginning of a “non-screen signal” state.
Suspect that the system is a problem, but to restart the system into a state of mainframe disk may have heard there are running, but not any change on the screen, still no signal.
Would like to know what this is a problem, a friend of mine guess is the need for hardware upgrades …
invite friends to help me look, thank it!

display, come across such a situation, I did not think the display signal, and the host in the normal work.that the issue should be in the internal display You can be a useful move to the host computer can see in a normal computer, is not it also happen if the host moved to a good display useful on the host that there is no problem, or if not In that case the host may be problems if there are problems ..host, usually out on the motherboard, you can ask us to detect what motherboard is not good.In addition, you can use Taiwan to use your good host Display, look at the display is not your problem, you can check the signal line has a good play, there is no loosening…If there is no oxidation are good, then surely there is a problem, only to find the computer The maintenance repair shop.You are an independent graphics it? Host the back of the card is inserted independent of the bottom can be a