Dell Dimension 2300 - Manual (Page 45)

14. Connect your computer and devices to electrical outlets, and turn them on.
15. If you are prompted to press <F1> to continue, press <F1>.
Clearing CMOS
To clear the computer's CMOS:
1. Shut down the computer .
2. Turn off any attached devices and disconnect them from their electrical outlets.
3. Disconnect the power cable from your computer, and then press the power button to ground the system board.
4. Remove the computer cover .
5. Locate the 3-pin CMOS jumper on the system board. The jumper is on the first two jumper pins nearest the back of the computer. Move the jumper to
the two pins nearest the front of the computer, wait approximately 5 seconds, and then move the jumper back to its original position.
6. Replace the computer cover .
7. Connect your computer and devices to electrical outlets, and turn them on.
8. If you are prompted to press <F1> to continue, press <F1>.
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CAUTION: Before you begin any of the procedures in this section, follow the safety instructions provided in your Owner's Manual.
NOTICE: The following procedure resets all standard settings for your computer. Before proceeding, record all current settings so that you can restore
them when you finish this procedure.
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.