its your pc so whats the password?
Is it a bios paswword requested
is an admin password requested
your homework go to you tube to find out how to reset these paswords
You have to go inside the machine. You kneed a non metalic screwdriver
before you even opn the pc you ned to unplug it leave till it cools down.
loook on you tube to get a better explination.
You can take the batttery out for about 3o mins and see if that resets it.
If its a newer machine you have to get hold of a 2 pin head cirut breaker and plant itinot the motherboard somewhere to reset the bios password.
I think you better search the forum about paswrods under bios password and admin paswords