You can attempt to reset Bios By Pulling the CMOS battery, you will need to disassemble laptop, Not sure offhand if you have a plug in battery or one thats soldered on... Basically in a laptop there are 3 main types of Cmos battery connections.. 1 is plugged in to the motherboard using a 2 wire plug... 2 is a battery tray on the motherboard that the battery snaps into and out of... 3 is a battery that is soldered to the motherboard from both the positive and negative sides....
With any 3 of these.. You need to remove the battery... HOLD the power button (make sure your laptop battery is removed as well and unplug the AC Adapter... )
Then Reattach CMOS Battery and reassemble and attempt to power on
Note: The Soldered On Batteries Can Be Desoldered and removed...
Do Not Remove the solder from the contact points!! You need to use a pointed flat tool and your soldering gun... Use your tool to pry the battery away from its connection pad... To Do This, First Heat the soldering gun, carefully heat the 2 contact pads of the CMOS battery, as your heating them get the solder to melting point and then quickly pry the battery off the board, heat the 2 connection pads again and pull the battery away from the motherboard.... You should have the 2 contact pads still with solder left on them...
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