A technician turns on a PC and before the computer boots up, the technician is prompted for apassword. The technician does not know the password. Which of the following can the techniciando to allow access to the PC?（） (Select TWO).
A. Set the clear password jumper on the motherboard
B. Enter the BIOS setup and select the clear password setting
C. Remove the power cord from the power supply and then plug it back in
D. Power cycle the PC
E. Remove the CMOS battery for 15 minutes