O.K., now unplug the power cable from the power supply and press power button for 10 seconds
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Gently remove the silver “coin” battery from the motherboard.
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O.K., now unplug the power cable from the power supply, gently remove the silver “coin” battery (should have at least a 2.6v charge) from the motherboard. and press power button for 30 seconds. That alone should clear the BIOS but you can also do as listed below.
If you know where they are, short-out the two pins with the jumper OTHERWISE just leave the computer unplugged for at least 10 minutes or longer.
This will reset the BIOS setting to the “new” computer defaults.
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Then plug power cable in and switch on.
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Put the "coin" battery back in, plug power cable in and switch on.
If this doesn’t work you MAY have a bent pin on the CPU or the like.
Have you tried DrGlowire’s suggestions?
O.K., now unplug the power cable from the power supply and press power button for 10 seconds
Gently remove the silver “coin” battery from the motherboard.
If you know where they are, short-out the two pins with the jumper OTHERWISE just leave the computer unplugged for at least 10 minutes or longer.
This will reset the BIOS setting to the “new” computer defaults.
Then plug power cable in and switch on.
If this doesn’t work you MAY have a bent pin on the CPU or the like.