Sudden restart nor no display

[dreamtfk]

So my computer suddenly restarted while watching a movie and then the light on monitor turned amber. I opened the case and fiddled with some wires and then it started. I went back to my movie and it restarted again. Now I cannot get the pc to boot period. The hard drive activity light is constantly on the monitor light stays amber and I do not hear the POST beep. I have checked all connections.

Let me note that my video card and power supply are both new and are only a few months old. Also I have not recently had any new drivers installed.

[thefly]

maybe reset the bios and see if she'll start up again.

If not, then it's a process of elimination. I usally pull all the cards except video and disconnect the hds cds etc. See if the mobo will post.

Is the machine over clocked alot?

[winterhavok]

Can you hear the fans starting up? Also, it might either be your motherboard (having no POST beeps) or it could be a dead video slot.

[dreamtfk]

No my cpu was overclocked just a little but I have since set it back to stock speeds. Today I took my system to best buy (I know, but I had no other shop nearby) they hooked it up and it started right away. I took it home and hooked it up to my fathers LCD screen and I am typing this on my computer. So it seems like a monitor problem.

However why was my computer constantly rebooting could that possible be caused by a faulty monitor?

[winterhavok]

Well it's possible that the monitor was causing the video card to go on the fritz and that will reboot the system a lot of times. If I were you, I would put the machine under a stress test and make sure that it is stable, I had one machine to boot fine after you let it set for a few hours and then 45min into operation it would reboot and not boot again giving memory problem POST beeps.

[dreamtfk]

Holy crap now I'm getting the same problem with the LCD screen, I am really beginning to think it is my mobo going out on me. I have practicaly replaced every part with known working parts or brand new parts (including the psu) and still the reboots and now this display problem.

[Jimbob7]

Could be heat, i know my P4C800 DLX doesn't boot first time, if its warm in my room, and even then it boots with default bios settings, and i have to reboot again, its partly because of some of the settings in the bios that are loaded. In the winter i never had this problem. The reason i bring this up is because it seems to boot, after its been off for a while. This isnt a very likely cause, but worth looking into before you buy a new mobo.