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EMachine T3406 wont boot

I was on my computer browsing the internet as usual and without warning my screen just went blank. First I thought my video card went out so I shut down the computer and restarted it and now I dont even get a boot screen. I replaced the video card and even used the onboard video and still nothing. The computer turns on but i get nothing on the screen. Switched the monitor and still get nothing.

I've done research and found out that eMachines does this to alot of other people, and that the motherboard may have some bad capacitors. I checked all of them on the board and see no physical signs of them being bad. So I was wondering is it possible that if my bios chip went bad, will it cause my computer to blank out like that while im on it? Or I have some bad capacitors that isn't showing any physical damage?

Let me add that the power supply was replaced also with no luck.

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  • 2 more comments 
  • qTRUq Jul 05, 2008

    No there is no post beep. i took out everything 1 by 1 to see if any of them was the problem and yet i get the same thing. It powers up and the cpu fan is running at full speed as it normally does before idleling down again but it doesn't idle down, and the blue power light is on of course. No hard drive light is on either, but it does flicker right before it shuts off from me holding in the power button.

  • qTRUq Jul 05, 2008

    No jumper by the cpu, but there is 1 by the battery for the bios. i resetted that too, even changed the battery and still no beeps or boot-ups. People are saying its a bad capacitor somewhere near the power supply connection to the motherboard. I see a few of them but they dont look burned out, eventho its still possible they could be bad.

  • qTRUq Jul 05, 2008

    im actually testing them right now since i have some new ones sitting around lol

  • qTRUq Aug 14, 2008

    The CPU was fried, but showed no signs of it. I found out by getting the same model motherboard, then using the CPU from a friends computer to get my results. Not gonna replace the CPU since it was a Celeron. So now i have a ugly eMachines case, 2 working motherboards with no processors for them hahaa.



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Is there a post beep when the pc is switched on. check the memory if it is a beep beep beep sound , also disconect the hard drive, dvd drive, floppy, and any usb devices and see if it boots up. if that fails it does seem like the mother board, also check the cpu fan has it stoped. also find out the power switch conector on the mother board, from the base unit switch to the mother board. also chech the power connector from the power supply to the mother board , on newer boards there are two that go to the mother board its self , a big one and a very small one .

Posted on Jul 05, 2008

  • 1 more comment 
  • Storm Jetson Jul 05, 2008

    sounds like it is a mother board problem . is there a jumper near the cpu , normally resets the password feature , and some times resets the bios . might help normally situated near the battery and the cpu , need to be put on for about 2 seconds . then removed

  • Storm Jetson Jul 05, 2008

    quite true it could be. would be very hard to resolder, you could try to read the out put with a multimeater, but sounds like a new mother board would be esier to refit in to the case

  • Storm Jetson Jul 05, 2008

    cant think of wot else to tell you .. hope it helped ..



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