Clearing Forgotten Passwords; Clearing Cmos Settings - Dell OptiPlex SX280 User Manual

CLR Real-time clock reset
CMOS
jumpered unjumpered

Clearing Forgotten Passwords

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
NOTICE: This process erases both the system and admin passwords.
1. Follow the procedures in "Before You
2. Remove the hard drive.
3. Remove the 2-pin password jumper (PSWD) on the system board.
4. Replace the hard drive.
5. Replace the computer cover.
6. Connect your computer and monitor to electrical outlets, and turn them on.
7. After the Microsoft® Windows® desktop appears on your computer, shut down the computer.
8. Turn off the monitor and disconnect it from the electrical outlet.
9. Disconnect the computer power cable from the electrical outlet, and press the power button to ground the system board.
10. Remove the computer cover.
11. Remove the hard drive.
12. Replace the PSWD jumper.
13. Replace the hard drive.
14. Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
15. Connect your computer and devices to electrical outlets, and turn them on.
NOTE: This procedure enables the password feature. When you enter system setup, both system and admin password options appear as Not
Enabled—meaning that the password feature is enabled but no password is assigned.
16. Assign a new system and/or admin password.

Clearing CMOS Settings

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
1. Follow the procedures in "Before You
2. Remove the hard drive.
3. Reset the current CMOS settings:
a. Locate the password (PSWD) and CLR CMOS jumpers on the system board.
b. Remove the password jumper from its pins.
c. Place the password jumper on the CLR CMOS pins and wait approximately 5 seconds.
d. Remove the jumper from the CLR CMOS pins and place it back on the password pins.
4. Replace the hard drive.
5. Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
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