Question about E-Machines T2792 PC Desktop

2 Answers

E-Machines T2792 PC Desktop is not booting

Hey all, I wonder if somebody else has run into this: The PC is an E-Machines T2792 and belongs to my mom. She walked in on it one day and found it powered on, but not booted. No output to video and the lights for the CD and HD simply blink non-stop. No discernable code or pattern to the blinking and the PC won't even get to CMOS. Upon closer inspection, I noticed that the power button seemed to be jammed. I was able to depress the button and get it to boot once, but upon reboot was back at square 1 (blinking lights). After taking the side panel off, I also noticed that while the power supply comes up and running, the CPU fan does not. I'm quite sure that the power button was damaged by one of the grand-kids (ages 2 and 4) while mom was out of the room. Could this have also caused some damage to the mother-board or processor? Any trouble shooting suggestions are welcome.

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  • Gregg LaFlamme Jan 31, 2007

    Sandrew,
    Thank you for the suggestion, unfortunately for me it didn't work, but then again, on this machine, I didn't find exactly what you described either. (probably becuse this machine is a proprietary piece of JUNK!) ;-)

    After doing a google on JBAT1, I figured that you were instructing me to clear the BIOS. When I took a look at the MB I could not find a JBAT1 circut, however, I did find circuts with jumpers labled j1 through j4. Also I found a sticker on the inside of the cabinet showing that these circuts were for bios settings. J4 was the one listed to clear bios, so moved it from the 1-2 setting to the 2-3 setting for 20 seconds. After moving back to the 1-2, I then tried to boot. No go, same symptoms, could not even getinto bios.

    Any other suggestions? I appreciate your time.

  • Gregg LaFlamme Feb 01, 2007

    Thanks, I'll give it a try. I am worried that the MB is dead, but if that's the case, there isn't much else I'll be able to do except try and find a replacement or rob the peripherals and start a new build.

  • ptheerow Nov 29, 2007

    i am having the same problem (wahlumssp) power supply turns on and the
    cpu fan doesnt and the power led is yellow...changed out the power
    supply but its somthing else either the mb is dead or cpu..but im not sure...were you able to fix your mother's comp..

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2 Answers

Sandrew, Thank you for the suggestion, unfortunately for me it didn't work, but then again I didn't find exactly what you described either. There was no JBAT1 on the MB, there were, however, circuts with jumpers labled j1 through j4. I figure that the difference in the labling may be due to the fact that this is a proprietary brand. After doing a google on

Posted on Jan 31, 2007

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  • Master
  • 2,961 Answers

This could be a corrupted bios, look on the motherboard for the 'JBAT1' terminal and put the plastic jumper cap from pins 1-2 to pins 2-3 for a few seconds then back to pins 1-2. Start the pc hopefully and press F2 or DEL to enter the bios and set the time and date in standard bios settings and look for the auto detect drives and select it. press ESC and and save settings and it will re boot and go into windows if the softwaere was not corrupted when it was turned off at the button.

Posted on Jan 30, 2007

  • andrew pester
    andrew pester Jan 31, 2007

    it's unusual that you cannot get into the bios, so try taking the cmos battery out(disc shaped watch type battery) for 15 minutes or so and try again.

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