Installing System Components 107Installing a ProcessorCAUTION: Many repairs may only be done by a certified service technician.You should only perform troubleshooting and simple repairs as authorized inyour product documentation, or as directed by the online or telephone serviceand support team. Damage due to servicing that is not authorized by Dell is notcovered by your warranty. Read and follow the safety instructions that camewith the product.1 If you are upgrading your processors, prior to upgrading your system,download and install the latest system BIOS version fromsupport.dell.com. Follow the instructions included in the file download toinstall the update on your system.NOTE: In single-processor configurations, socket CPU1 must be used.2 Unpack the processor if it has not been used previously.If the processor has already been used, remove any thermal grease from thetop of the processor using a lint-free cloth.3 Align the processor with the socket keys on the ZIF socket.See Figure 3-19.CAUTION: Positioning the processor incorrectly can permanently damage thesystem board or the processor. Be careful not to bend the pins in the ZIF socket.4 With the release lever on the processor socket in the open position, alignthe processor with the socket keys and set the processor lightly in thesocket.CAUTION: Do not use force to seat the processor. When the processor ispositioned correctly, it engages easily into the socket.5 Close the processor shield.6 Rotate the socket release lever down until it snaps into place.7 Using a clean lint-free cloth, remove the thermal grease from the heat sink.8 Open the grease packet included with your processor kit and apply thermalgrease evenly to the center of the top of the new processor.CAUTION: Using excess thermal grease can cause grease to contact theprocessor shield, which can cause contamination of the processor socket.9 Place the heat sink on the processor. See Figure 3-18.