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Do not touch the components or contacts on a card. Hold a card by its edges or by its metal mounting bracket. Hold a component such as a processor by its edges, not by its pins. NOTICE: 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. NOTICE: When you disconnect a cable, pull on its connector or on its strain-relief loop, not on the cable itself. Some cables have a connector with locking tabs; if you are disconnecting this type of cable, press in on the locking tabs before you disconnect the cable. As you pull connectors apart, keep them evenly aligned to avoid bending any connector pins. Also, before you connect a cable, ensure that both connectors are correctly oriented and aligned. 1. Ensure that the work surface is flat and clean to prevent the computer cover from being scratched. 2. Turn off your computer. 3. If the computer is connected to a docking device (docked), undock it. See the documentation that came with your docking device for instructions. 4. Disconnect any telephone or telecommunication lines from the computer. 5. Disconnect your computer and all attached devices from their electrical outlets, and then press the power button to ground the system board. 6. Remove any installed PC Cards from the PC Card slot. 7. Close the display and turn the computer upside down on a flat work surface. 8. Slide and hold the battery-bay latch release on the bottom of the computer, and then remove the battery from the bay. 9. Remove any installed modules, including a second battery, if installed. 10. Remove the hard drive. Computer Orientation NOTICE: To avoid damaging the computer, perform the following steps before you begin working inside the computer. 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. NOTICE: To avoid damaging the system board, you must remove the main battery before you service the computer. 1 battery 2 battery-bay latch release Screw Identification When you are removing and replacing components, photocopy "Screw Identification" as a tool to lay out and keep track of the screws. The placemat provides the number of screws and their sizes. 1 front 2 right 3 back 4 left Hard Drive Door: (2 each) Modem to System Board: (2 each) Optical Drive: (1 each) Keyboard to Computer Base: (4 each) EMI Shield: (1 each) Display Assembly to Back Panel: (2 each) Back to Contents Page Hinge Bracket to Computer Base: (4 each) Display Bezel: (5 each) Screw Covers (2 each) Display Bumpers (3 each) Display Panel: (4 each) Display Latch: (2 each) Top of Palm Rest to Computer Base: (2 each) Palm Rest to Base Plastics: (12 each) Palm Rest to Battery Bay: (1 each) Battery Bay Shield to System Board: (2 each) System Board to Base Plastics: (2 each, hard drive cage) (2 each, optical drive cage) (2 each, chipset heat sink) Left Antenna to Hard Drive and Optical Drive Cages (2 each) Back to Contents Page Flashing the BIOS Dell™ Inspiron™ 1150 Service Manual Flashing the BIOS From a Floppy Disk or a CD Flashing the BIOS From the Hard Drive If a BIOS update program floppy disk or CD is provided with the new system board, see "Flashing the BIOS From a Floppy Disk or a CD." If you do not have a BIOS update program floppy disk or CD, see "Flashing the BIOS From the Hard Drive." Flashing the BIOS From a Floppy Disk or a CD 1. Ensure that the AC adapter is plugged in and that the main battery is installed properly. 2. Insert the BIOS update program floppy disk or CD, and turn on the computer. Follow the instructions that appear on the screen. The computer continues to boot and updates the new BIOS. When the flash update is complete, the computer will automatically reboot. 3. Press