Dell Inspiron Small Desktop (3646, Mid 2014) - Manual (Page 53)

Clearing CMOS Settings
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before Working Inside Your Computer . After working inside your
computer, follow the instructions in After Working Inside Your
Computer . For more safety best practices, see the Regulatory
Compliance home page at dell.com/regulatory_compliance.
Prerequisites
1 Remove the computer cover .
2 Follow the procedure from step 1 to step 5 in “Removing the drive cage ”.
Procedure
1 Locate the CMOS jumper (CMCL R2) on the system board.
For more information on the location of the CMOS jumper, see
“System-
Board Components” .
2 Remove the jumper plug from the password jumper (PSWD1) and place it
on the CMOS jumper.
1 jumper plug 2 password jumper (PSWD1)
3 CMOS jumper (CMCL R2)
3 Follow the procedure from step 3 to step 6 in “Replacing the drive cage ”.
4 Replace the computer cover .
5 Turn on your computer.
The CMOS checksum error will be displayed.
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