Modify your browsers settings to allow Javascript to execute.After completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all components operate properly.In some systems the cooling fan is on even when the computer is in the Standby, or Suspend modes.
The power cord should always be disconnected before servicing a unit. This lock prevents unauthorized access to the internal components. The computer ships with the Smart Cover Lock in the unlocked position. For more information about locking the Smart Cover Lock, refer to the Desktop Management Guide. You will need the key to access the internal computer components in any of the following circumstances. Hp Compaq Dc7900 Sff Driver Bit KeyOrder PN 166527-001 for the wrench-style key or PN 166527-002 for the screwdriver bit key. Hp Compaq Dc7900 Sff Install It ThroughTo lock the front bezel, remove the security screw from the fan duct (1) and install it through the chassis frame into the front bezel (2). To achieve the maximum memory support, you can populate the system board with up to 16-GB of memory configured in a high-performing dual channel mode. Otherwise, the system will display a POST error message indicating that a memory module must be installed in the black socket. The technology and device width can vary between the channels. For example, if Channel A is populated with two 512-MB DIMMs and Channel B is populated with one 1-GB DIMM, the system will operate in dual channel mode. In flex mode, the channel populated with the least amount of memory describes the total amount of memory assigned to dual channel and the remainder is assigned to single channel. For optimal speed, the channels should be balanced so that the largest amount of memory is spread between the two channels. If one channel will have more memory than the other, the larger amount should be assigned to Channel A. For example, if you are populating the sockets with one 1-GB DIMM, and three 512-MB DIMMs, Channel A should be populated with the 1-GB DIMM and one 512-MB DIMM, and Channel B should be populated with the two 512-MB DIMMs. With this configuration, 2-GB will run as dual channel and 512-MB will run as single channel. Regardless of the power-on state, voltage is always supplied to the memory modules as long as the computer is plugged into an active AC outlet. Adding or removing memory modules while voltage is present may cause irreparable damage to the memory modules or system board. If you see an LED light on the system board, voltage is still present. ![]() ![]() Match the notch on the module with the tab on the memory socket.
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