3. thermal-grease syringeNOTE: The thermal-grease is intended for one-time use only. Dispose of the syringe afteryou use it.c. Place the heat sink onto the processor.d. Tighten the four screws to secure the heat sink to the system board.NOTE: Tighten the screws diagonally opposite to each other. Do not over-tighten the heatsink retention screws when installing the heat sink. To prevent over-tightening, tighten theretention screw until resistance is felt, and stop once the screw is seated. The screw tensionshould be no more than 6 in-lb (6.9 kg-cm).Next steps1. Install the cooling shroud.2. Follow the procedure listed in After working inside your system.3. While booting, press to enter the System Setup and check that the processor informationmatches the new system configuration.4. Run the system diagnostics to verify that the new processor operates correctly.PCIe card holderRemoving the PCIe card holderPrerequisites1. Ensure that you read the Safety instructions.2. Follow the procedure listed in Before working inside your system.3. If installed, remove the full-length PCIe card.CAUTION: Many repairs may only be done by a certified service technician. You should onlyperform troubleshooting and simple repairs as authorized in your product documentation, or asdirected by the online or telephone service and support team. Damage due to servicing that isnot authorized by Dell is not covered by your warranty. Read and follow the safety instructionsthat came with the product.CAUTION: Do not use your system without the PCIe card holder installed. The PCIe card holder isnecessary to ensure proper system cooling.Steps1. Press the release tab and slide the card holder toward the back of the chassis to release the PCIecard holder from the chassis.2. Lift the PCIe card holder out of the chassis.NOTE: To ensure proper system cooling, you must replace the PCIe card holder.90
