Fill out the Diagnostics Checklist as you complete these checks.CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located inthe Product Information Guide.Check the card seating and cable —1. Turn off the computer and devices, disconnect them from their electrical outlets, wait 10 to 20 seconds,and then open the computer cover.2. Ensure that each card is firmly seated in its connector. Reseat any loose cards.3. Ensure that all cables are firmly connected to their corresponding connectors on the cards. If any cablesappear loose, reconnect them.For instructions on which cables should be attached to specific connectors on a card, see the card'sdocumentation.4. Close the computer cover reconnect the computer and devices to electrical outlets, and then turn themon.Test the graphics card —1. Turn off the computer and devices, disconnect them from their electrical outlets, wait 10 to 20 seconds,and then open the computer cover.2. Remove all cards except the graphics card. See "Removing a PCI Card."If your primary hard drive is connected to a drive controller card and not to one of the system boardIDE connectors, leave the drive controller card installed in the computer.3. Close the computer cover, reconnect the computer and devices to electrical outlets, and then turn themon.4. Run the Dell Diagnostics.Test the cards —1. Turn off the computer and devices, disconnect them from their electrical outlets, wait 10 to 20 seconds,and then open the computer cover.2. Reinstall one of the cards that you removed previously. See Installing a PCI Card.3. Close the computer cover, reconnect the computer and devices to electrical outlets, and then turn themon.4. Run the Dell Diagnostics.If any of the tests fail, the card you just reinstalled is faulty and needs to be replaced.5. Repeat this process until you have reinstalled all cards.Card Fan ProblemsCAUTION: Before you begin any of the procedures in this section, follow the safety instructions in theProduct Information Guide.Check the cable connections — Make sure the card fan cable is connected firmly to the card fan connectoron the system board (for the mini-tower computer see "System Board Components" for the desktop computer,see "System Board Components").Drive ProblemsCAUTION: Before you begin any of the procedures in this section, follow the safety instructions located inthe Product Information Guide.