Try to reset the bios by Removing the laptop battery, locate the cmos battery inside the laptop, remove it then wait 5min, plug in the power, switch on the laptop and then the moment it switches on remove the power plug. Then put the cmos battery back, then the laptop battery and turn it on. All should be right. Referring
SOURCE: mother bord bios reset
To Fix, Try to open up your laptop then find cmos battery which you remove for 15 mins and while removed short contacts on motherboard where battery was which should restore default bios.
[Dont forget if shorting battery contacts avoid static electricity.]
Then replace battery in correct orientation and reassemble.
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