Turn the computer back on and make sure that the BIOS settings have reset, or the system password is now cleared–if that's why you were clearing CMOS.
If everything is good, turn off your computer, return the jumper to its original position, and then turn the computer back on.
It’s a set of code that resides on a chip on yours system’s motherboard. Once in BIOS setup, search for “BIOS Revision” and value against it would be your BIOS version. If you have downloaded “BIOS Update Bootable CD iso” then select FAT32 in the drop down menu under File system and select ISO Image next to “Create a bootable disk using”. If F12 doesn’t’ works, it may be different for your model, you’ll have to check the way to boot from USB from Lenovo’s website.
When a computer boots up, it looks in the chip for BIOS for instructions on where to find the operating system and among many other things, BIOS also further facilitates communication between the operating system and the hardware. If you have a modern laptop, you’ll have to press the Lenovo key to access BIOS menu while your laptop is powered off, which is usually besides the power button on the front. Click the CD Icon to browse and select the downloaded file. If you have a modern laptop, you’ll have to press the Lenovo key to access BIOS menu while your laptop is powered off, which is usually besides the power button on the front. Select your USB from the list, and follow the instructions on-screen. Run the downloaded file “BIOS Update Utility for Windows”. Copy the file path it shows similar to “C:\Drivers\Flash\j9uj22ww”.
Every manufacturer seems to have their own way of wording it.
The BIOS Settings option is usually located near the bottom of the screen, or at the end of your BIOS options, depending on how it's structured.
It should be easy enough, however, as long as you can find that Another way to clear CMOS is to reseat the CMOS battery. If you're using a laptop or tablet, make sure the main battery is removed, too.
Here you can boot from different drives, say- DVD, USB etc.
Also the System Configuration can be managed by you.
The easiest way to clear the CMOS is to enter the BIOS setup utility and choose to Reset BIOS Settings to their factory default levels.
The exact menu option in your particular motherboard's BIOS may differ but look for phrases like , etc.