jumper settings to clear password

Can any one of you guys help find the jumper settings to clear the password on the cmos.
here is all the reference i found about the motherboard:
Acer Aspire Socket 7 PN 91.93120.001 Ali Chipsets M1543C-A1 & M1531-B1 Info stamped on MB: X50LA 98119-1 48.33A02.011
BIOS Info: Unable to read string detail. It is an SST Chip with an Acer Inc. X50LA on the motherboard