Hi my name is ***** ***** I will be the expert working with you today to help and resolve the problem you have posted.
locate the coin sized battery on the motherboard and remove it wait for 10 mins and power on the laptop without the battery.
Get into the bios and reset the bios to default setting and remove the password ***** the security section. When it asks you to enter password ***** hit enter without entering any characters.
let me know how it goes after you try.
alright, have a good day.