When I reboot the PC, it prompt me to enter HDD password.previously was saved as "korea". I enter cmos to clear the password and save and exit. When I reboot the PC, it ask for password again but when I just enter, it is invalid. Even I use the old password, it does not work anymore! The casing of the PC is wield on, so I cannot open it to reset the jumper. Please advise if there is any solution. Thank you.

Can you access the CMOS battery? Usually removing the battery for ~5minutes should do the trick

You can contact the hardware manufacturer support staff and ask for their recommended methods of bypassing the BIOS security. In the event the manufacturer cannot [or will not] help you there are a number of methods that can be used to bypass or reset the BIOS password yourself. They include: # Using a manufacturers backdoor password to acess the BIOS. # Use password cracking software. # Reset the CMOS using the jumpers or solider beads. # Removing the CMOS battery for at least 10 minutes. # Overloading the keyboard buffer. # Using professional service. Many BIOS manufacturers have provided backdoor passwords that can be used to acess the BIOS setup in the event you have lost your password. These passwords are case sensitive, so you may wish to try a variety of combinations. Keep in mind that the key associated to "_" in the US keyboard corresponds to "?" in some European keyboards. WARNING: Some BIOS configurations will lock you out of the system completely if you type in an incorrect password more than 3 times. Read your manufacturers documentation for the BIOS setting before you begin typing in passwords. Here are the Award BIOS backdoor passwords: ALFAROME ALLy aLLy aLLY ALLY aPAf _award AWARD_SW AWARD?SW AWARD SW AWARD PW AWKWARD awkward BIOSTAR CONCAT CONDO Condo d8on djonet HLT J64 J256 j332 j332KDD Lkwpeter LKWPETER PINT pint SER SKY_FOX SYXZ syxz shift+syxz TTPTHA ZAAADA ZBAAACA ZJAAADC 01322222 589589 589721 595595 598598 HTH

Maybe it´s easier for you to just download a free program called "Kill CMOS" You can download from this site: http://www.utilitygeek.com/details.php?fileid=82