Introduction

This guide show you how to remove and replace the motherboard in a Dell Optiplex GX620.

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    • Power down your PC and remove the power cord from the back.

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    • Press and hold the power button for about 10 seconds, then release.

    • This helps drain any remaining power stored in the capacitors, so that you can safely work on the internal components.

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    • With the computer standing upright, firmly pull on the tab at the back of the computer.

    • When the side panel pops free, gently pull the panel away from the computer.

    • If you have trouble freeing the side panel from the case, you may need to pull the tab a bit harder.

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    • Move the cables out of your way.

    • SATA Power

    • SATA Data

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    • Unplug the power cable

    • Unplug the data cable

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    • Unplug the fan that is on the motherboard.

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    • There is two Phillips #2 screws that need to be removed.

    • The two screws have springs that keep them there.

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    • Lift the heat sink.

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    • Push and release tap on it. And then take the CPU out.

    • Remember to put new thermal paste on the CPU.

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    • Push the tabs down.

    • Pull the cards out.

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    • Pull the two cables from the DVD drive off.

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    • Pull the power cable from the DVD drive off.

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    • Pull the CPU power cable off.

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    • Pull the three cables off.

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    • Push the tab to releases the latch.

    • Push the tab and pull the graphics card out.

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    • Remove the six Philips #2 screws.

    • Remove the two green Philips #2 screws.

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    • Gently pull the motherboard out.

Conclusion

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

Padraic Hoselton

Member since: 23/08/17

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