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My computer won't start up and my mouse and keyboard are not working. Do I need to replace my CMOS Battery?

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Yes turn off your computer and replace the Cmos battery. It seems that your keyboard and mouse is connected into the usb port of your computer, the usb function in the Cmos setup is disabled that's why your keyboard and mouse is not working. Upon checking the Cmos setup enabled the usb function and save the changes and restart the computer to take effect.

Posted on Feb 08, 2010

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1 Answer

Reset cmos


If the monitor had no signal, what was/were your indications(s) that the keyboard and mouse were not working? It is possible that the CMOS may have erred and caused your lack of video, but not likely.
Check this...look at the heatsink for the CPU? Are the fins clogged with dust/dirt? If so, it is possible that the CPU is going into auto shutdown from overheating. Even if the fan is running, if there is no air moving over the fins, the CPU will overheat. If that is not the problem, then my next guess would be the onboard video has given up the ghost. If you are not getting any kind of beep codes that would indicates CMOS errors, then this is likely.

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I reset my cmos on my dimension c521 and keyboard and mouse dont work. how can i get to bios?


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I have a Logitech wireless mouse and it is not working with my laptop after about 6 months... the batteries have been changed


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Hope this helps. Please rate my response.
Thanks.
Have a good day.

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1 Answer

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1 Answer

My Acer Aspire T310 won't go past the Acer screen and the Keyboard and Mouse don't work


Yours may be a little old computer and the cmos battery (on the mother board)is drained out. Replace this battery. You need a working keyboard.

Jul 24, 2008 | Acer Aspire T310 PC Desktop

1 Answer

Keyboard and mouse not working


it is likely the keyboard or mouse is putting out erroneous data and windows is then ignoring the ports,
try disconnecting the mouse pad or the keyboard and run with only one connected at a time if re-seating them has no effect.

there is sometimes a combo of software that may also effect the keyboard mouse input.
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Jun 04, 2008 | Acer Aspire 5100 Notebook

1 Answer

Keyboard and mouse not working


After Pressing the Power On button... Hold the F12 key or on some models it is the Delete Key.. to get you to Bios Setup Utility..
Look there in Advanced Settings or Similar to See if your Keyboard And Mouse show up..
Option 2: The Ribbon cables that connect your Mouse and Keyboard are Located Underneath the Keyboard.. Remove the Keyboard and check to see that the ribbon cables are Secure in the ports..
Changing the CMOS battery is probably not going to fix your problem.. IF your CMOS battery was bad, you would be experiencing The System Time Changing .. your Clock would Show a Different Time Year and Date...... Pulling the CMOS battery for 30 seconds or so then resetting it might Reset it, This resets the BIOS and Resets Any Connected Hardware.... On Some Laptops Doing this Is not enough, You will also need to short the J1 Jumper pin...
and Some other Laptops have an affixed CMOS battery that cannot be removed unless Unplugged OR unsoldered From the Mainboard...


Hope this info helps..

http://www.wnycomputerpro.com

Jun 01, 2008 | Acer Aspire 5100 Notebook

1 Answer

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Hi FRND,

You need to open the cabinet or PC system after that just have a look at the CMOS battery remove it and start the PC system for 5 to 15 second…
connect the Keyboard and mouse to the system have a look at the LED’s at the right hand side of the keyboard it it flash the power ok from the motherboard try using the replacing one by one … try replace keyboard & mouse might be short in side…

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