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1. Follow the instructions in Before You Begin.
2. Remove the computer cover (see Removing the Computer Cover).
3. Locate the 3-pin CMOS reset jumper (CMOSCLR1) on the system board (see System Board Components).
4. Remove the 2-pin jumper plug from pins 2 and 3 and fix it on pins 1 and 2.
5. Wait for approximately five seconds to clear the CMOS setting.
6. Remove the 2-pin jumper plug from pins 1 and 2 and replace it on pins 2 and 3.
7. Replace the computer cover (see Replacing the Computer Cover).
8. Connect your computer and devices to electrical outlets and turn them on.
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WARNING: The computer must be disconnected from the electrical outlet to clear the password setting.
CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is
not covered by your warranty.
CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal
surface (such as a connector on your computer).