Question about Acer Aspire E380-UD420A (ASE380-UD420A) PC Desktop

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Press the power button, the bios will boot, you will see the ACER logo on the screen, then the screen will go blank, and will not show any hard drive activity. I went into bios, it can see both hard drives and CD rom. I reset the bios back to default. Rebooted and I got the same, acer logo, black screen and nothing. I checked the power from the Antec power supply that I installed a year ago with a tester and it had a LL on leg 12v2. I got another new Antec power suppply from Best buy on Sunday and checked it with my Antec power checker, the same thing showed up 12v2 LL. I went ahead and plugged up the new Antec power supply, and got the same results. I removed all memory and installed one stick, same results. I removed all pci cards except for the video, same results. I removed the hard drive and got an error of no os. So I think my hard dives are fine, and memory is good, is the MOBO shot?

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  • jonjcapps Feb 03, 2010

    is there a way to test the motherboad? I thought of using a bootable cd room to check the pc. I do not get any boot error sounds, I did not try to boot with out memory, I wonder if the mobo gives error sounds on boot?

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Seems that you eliminated every possibility of failed components except for the motherboard. But before assuming that the motherboard is the real source of the problem, I would suggest that you try to run the computer using another monitor. And if possible, try to test your monitor on another computer.
Also, test the computer without any peripherals attached, like printers, scanners, ...etc.
If the computer still behave in the same way after all this, then you're 100% sure it is the motherboard.

Posted on Feb 03, 2010

  • Mohamed Omran Feb 03, 2010

    You could purchase a POST card tester like the one described here:

    http://www.pc-diagnostics.com/pc_diagnos...

    This could enable you test the motherboard, even if you don't get any beep codes from it. It has a 7-segment LED display which displays the code corresponding to the error. If you are familiar with motherboard troubleshooting & repair, you can use this code to diagnose the problem.

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