Dell Precision T1500 (Late 2009) - Manual (Page 10)

Clearing CMOS Settings
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the Cover .
3. Locate the 3-pin CMOS jumper (CLEAR CMOS) on the system board.
4. Remove the jumper plug from the CMOS jumper (CLEAR CMOS) pins 2 and 3.
5. Place the jumper plug on the CMOS jumper (CLEAR CMOS) pins 1 and 2 and wait approximately five seconds.
6. Remove the jumper plug and replace it on the CMOS jumper (CLEAR CMOS) pins 2 and 3.
7. Replace the Cover .
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