Question about Acer Aspire m5640 PC Desktop

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What purpose does the battery serve in the motherboard of my desk top?

Monitor says no input

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  • 2,878 Answers

It's for the CMOS chip that holds the BIOS software that supports your motherboards info. That's why you have the correct time and current hardware configuration even after being unplugged.

No input means there is no communication with the video card. Try reconnecting monitor cable. Or, possibly re-seating the video card if its an add-on.

Posted on Dec 12, 2012

Testimonial: "Now I know what the battery is for, but video card is not an add on, could it be the motherboard or hard drive?"

  • 1 more comment 
  • kevin Dec 12, 2012

    What do you think?

  • kevin Dec 12, 2012

    The video card is not an add-on, could it be the motherboard or hardrive?

  • Jose Diaz
    Jose Diaz Dec 12, 2012

    Most times it is the connection. Check that the monitor is set to correct input. There is VGA (blue plug), DVI (white), and HDMI. There is also the minute chance the on-board video might be disabled in BIOS. Press designated F key that is noted during boot to enter. Enable and save before exiting BIOS.

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