I boot the computer, no signal came, is also the host, 3 keyboard lights …

have given voice you may be not enough voltage, then the power cord problems, or hard disk failure.attention to the check card, Display, keyboard cable

lights flash 3 is the process leading to self-host, would have been able to Num Lock or Caps by testing the keyboard lights will become to determine whether the host state of graphics cards, you play like heavy graphics Try it, the old computer is not the point.If the old point.BIOS must know that the newspaper did not report to the police.Ash to clean up about a change in power to try.Does not change the memory or other hardware.First of all, do not rule out the motherboard power capacitors Problems caused by voltage instability, not working hard
to a lesser degree, problems and do not load, restart the computer, but no signal
been opened to see the host CPU, hard disk is working properly, all the hardware running it Normal.
In addition to the proposed after-sale machines on the hardware detection! Look at the graphics or video line, the machine does not have to start to hear voices, not words, the first memory be wiped out from a rub, rubber, if the voice is how the ring?