If you forgot Windows login password, try to reset your Windows 10 password with PC Unlocker software. In case you haven't done this before, it is best to take the help of a technician. If you forgot BIOS password, you will need to reset it by taking out the CMOS battery from the motherboard. Note: If you have previously set the BIOS password you will need to provide the password to enter BIOS setup. When the PC starts to run, on the first screen it will display the key you need to press in order to enter the BIOS setup. Restart the computer or if it is shut down, power it on. The steps may vary across computer models but remain more or less the same for all PCs: In order to find whether your computer is USB bootable or not, you will need to check the BIOS setup. While most modern computers today support USB booting, there are some that do not. Your computer will boot from the USB bootable drive only if it supports this type of boot. Part 1: Check If Your PC Supports USB Booting Part 4: Check If Your USB Drive Is Actually Bootable.Part 2: Re-Make A New Bootable USB with WizBurn.Part 1: Check If Your USB Drive Is Actually Bootable.