You should read your motherboard manual to check its location. The location of this jumper varies depending upon the motherboard brand.
Almost all motherboards contain a jumper that can clear all CMOS settings along with the BIOS password. By Using the Motherboard Jumper: In most motherboards CMOS battery is soldered, which makes it difficult to remove the battery. I'll not be responsible for the use or misuse of this information, including personal injury, loss of data or hardware damage. Please do not try any of following procedures if you are not familiar with computer hardware. It is not intended for basic users, hackers, or computer thieves. This information is intended for experienced users. SOURCE: forgot Toshiba qosimo F15-AV201 cmos password