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Dell Optiplex 745 Small Form Factor Motherboard Replacement

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In this guide, we will be removing parts of the computer from the motherboard to be able to take the board itself out.

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  1. Dell Optiplex 745 Small Form Factor Motherboard Replacement, Opening the case: crwdns2935265:01crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Dell Optiplex 745 Small Form Factor Motherboard Replacement, Opening the case: crwdns2935265:01crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Pull the tab and the lid will pop up.

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  2. Dell Optiplex 745 Small Form Factor Motherboard Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Dell Optiplex 745 Small Form Factor Motherboard Replacement: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Grab the lid and pull it up and off.

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  3. Dell Optiplex 745 Small Form Factor Motherboard Replacement, Motherboard: crwdns2935265:03crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Dell Optiplex 745 Small Form Factor Motherboard Replacement, Motherboard: crwdns2935265:03crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Dell Optiplex 745 Small Form Factor Motherboard Replacement, Motherboard: crwdns2935265:03crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Disconnect all of the cords that are connected to the motherboard.

    • Press in the lever on the side of the male end, and then pull out.

    • Pull cord straight out.

    • Disconnect the front plate (USB and audio output) from the motherboard.

    • Some of the cords in the pictures are missing due to the condition of our device when creating this guide.

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  5. Dell Optiplex 745 Small Form Factor Motherboard Replacement: crwdns2935265:04crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Dell Optiplex 745 Small Form Factor Motherboard Replacement: crwdns2935265:04crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Dell Optiplex 745 Small Form Factor Motherboard Replacement: crwdns2935265:04crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Remove the graphics card.

    • Lift the blue latch on the fat end of the graphics card.

    • Pull the blue lever on the skinny end of the graphics card toward the power supply.

    • Pull out one end of the card at a time.

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  6. Dell Optiplex 745 Small Form Factor Motherboard Replacement: crwdns2935265:05crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Dell Optiplex 745 Small Form Factor Motherboard Replacement: crwdns2935265:05crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Dell Optiplex 745 Small Form Factor Motherboard Replacement: crwdns2935265:05crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Remove the heat sink.

    • Unscrew the (2) two screws using a Phillips #2 screwdriver and lift out the heat sink.

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  7. Dell Optiplex 745 Small Form Factor Motherboard Replacement: crwdns2935265:06crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Dell Optiplex 745 Small Form Factor Motherboard Replacement: crwdns2935265:06crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Dell Optiplex 745 Small Form Factor Motherboard Replacement: crwdns2935265:06crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Remove the (5) five 6mm Phillips #2 screws from the motherboard.

    • Remove the (2) two 17mm Phillips #2 screws from the mount for the heat sink.

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  8. Dell Optiplex 745 Small Form Factor Motherboard Replacement: crwdns2935265:07crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Dell Optiplex 745 Small Form Factor Motherboard Replacement: crwdns2935265:07crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Dell Optiplex 745 Small Form Factor Motherboard Replacement: crwdns2935265:07crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Remove the back plate by lifting straight out by the blue latch that secures the graphics card.

    • Pull the end of the motherboard closest to the back of the computer away from the static back plate.

    • Lift this end away and out of the case.

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To reassemble your device, follow these instructions in reverse order.

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Alexander Rosner

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USFT-WALKUP-F17S5G5

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