Next, locate the CMOS jumpers. These are usually three small pins grouped together, often near the CMOS battery. Look for labels such as “CLR_CMOS,” “CLEAR,” or “JCMOS” next to it.
Note: While most desktop motherboards have both a CMOS jumper and a CMOS battery, most laptops and tablets only have a CMOS battery.
Check which two pins the jumpers are connected to. If they are on pins one and two, move the jumper caps from pins one and two to pins two and three. If you only have two pins, disconnect the jumper and temporarily connect it to both pins. If you don't have jumpers, skip this step.
Carefully remove the battery. Carefully insert your fingernail or a non-electric screwdriver under the lock. Press it lightly to release the battery, and then carefully pull the battery out of the slot.
Wait 10-15 seconds. This gives time to clear the CMOS settings from the battery-backed memory.
Then carefully insert the battery back into the socket and press firmly afghanistan telegram data until the retaining clip snaps into place.
Close the computer lid, plug the computer back in and turn it on. You should now be able to enter UEFI settings.
Additional tips:
Some motherboards have a physical button on the board itself or the rear IO panel that says "Clear CMOS" or "CLR_CMOS." Simply pressing and holding this button will clear the CMOS.
Instead of separate jumpers, some motherboards have a dedicated two-position switch labeled "Clear CMOS" that simply needs to be flipped the other way and back to clear the settings.
Change BIOS from Legacy to UEFI by converting MBR disk to GPT disk.
Your Windows PC's storage uses either a "Master Boot Record MBR" or "GUID Partition Table GPT" format. If you installed the OS on an MBR disk, even if you have a UEFI-capable motherboard, you won't be able to access the UEFI firmware settings.