Question about IBM ThinkCentre A50 PC Desktop

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I bought a IBM thinkcentre from Circuit City but no cmos password

I bought a IBM thinkcentre from Circuit City (fixture store sale), when It tried to start up the machine, the cmos password is not available.

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Best thing to do is take it bake and see if they set it for security reasons and have them unlock it,If they can't,It will need to be flashed since the bios password is not stored like it used to be.

Posted on May 12, 2009

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If it can be reset using cmos reset jumper. Or pull the cmos battery for a minute then put it back again. Do this when the unit is off and unplug it to the wall socket.

And be sure its battery is a watch type , it looks like a coin about 2cm in diameter.

Posted on May 12, 2009

  • fougzki May 12, 2009

    Then ask the store where you bought it.



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As some of you know.. Circuit City stores are closing for good all around the...

let the user login the computer.
goto cmd via run.
enter " net user"
the whole list will come out containing the administrator and guest.
then type " net user guestname or adminname"
then type " net user guestname or adminname * "
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If the Startup FAN is running, means the Power is going to your motherboard and other components. SMPS seems OK. You should check the display cable and CMOS Battery.
Just try to pull out the battery and Make the machien switch ON. (Don't forget to Check the display cable is connected or not).
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WIth regards
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Bypass power on password

Disconnect the AC power.
Remove the battery.
Remove the CMOS battery.
Wait a few minutes.
Re-insert the CMOS battery.
Reconnect the battery.
Try it.

If all else fails, find your original bill-of-sale, to prove "ownership", and telephone IBM for support.

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Change your cmos cell from motherbord.
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please check the system board if there is any bloated capacitor,and also try to take out the cmos battery reset the cmos and try to boot,if it fails,its system board.replacement needed

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