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Dell Optiplex GX620 Motherboard Replacement

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

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  1. Dell Optiplex GX620 Motherboard Replacement, How to unplug and discharge before repair: crwdns2935265:01crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, How to unplug and discharge before repair: crwdns2935265:01crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

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

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  2. Dell Optiplex GX620 Motherboard Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • 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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  3. Dell Optiplex GX620 Motherboard Replacement, Dell Optiplex GX620 Side Panel Disassembly: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • 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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  4. Dell Optiplex GX620 Motherboard Replacement, Now unplug your hard drives power and data cables.: crwdns2935265:04crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, Now unplug your hard drives power and data cables.: crwdns2935265:04crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, Now unplug your hard drives power and data cables.: crwdns2935265:04crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Move the cables out of your way.

    • SATA Power

    • SATA Data

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  5. Dell Optiplex GX620 Motherboard Replacement, Unplug your floppy drive on the motherboard and the drive.: crwdns2935265:05crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, Unplug your floppy drive on the motherboard and the drive.: crwdns2935265:05crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, Unplug your floppy drive on the motherboard and the drive.: crwdns2935265:05crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Unplug the power cable

    • Unplug the data cable

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  6. Dell Optiplex GX620 Motherboard Replacement, Disconnect CPU fan.: crwdns2935265:06crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, Disconnect CPU fan.: crwdns2935265:06crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Unplug the fan that is on the motherboard.

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  8. Dell Optiplex GX620 Motherboard Replacement: crwdns2935265:07crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement: crwdns2935265:07crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

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

    • The two screws have springs that keep them there.

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  9. Dell Optiplex GX620 Motherboard Replacement, New it’s time to remove the heat sink.: crwdns2935265:08crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, New it’s time to remove the heat sink.: crwdns2935265:08crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, New it’s time to remove the heat sink.: crwdns2935265:08crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Lift the heat sink.

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  10. Dell Optiplex GX620 Motherboard Replacement, CPU removal.: crwdns2935265:09crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, CPU removal.: crwdns2935265:09crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, CPU removal.: crwdns2935265:09crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • 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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  11. Dell Optiplex GX620 Motherboard Replacement, Remove the ram: crwdns2935265:010crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, Remove the ram: crwdns2935265:010crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Push the tabs down.

    • Pull the cards out.

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  12. Dell Optiplex GX620 Motherboard Replacement, Remove the DVD cable: crwdns2935265:011crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, Remove the DVD cable: crwdns2935265:011crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, Remove the DVD cable: crwdns2935265:011crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Pull the two cables from the DVD drive off.

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  13. Dell Optiplex GX620 Motherboard Replacement: crwdns2935265:012crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement: crwdns2935265:012crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Pull the power cable from the DVD drive off.

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  14. Dell Optiplex GX620 Motherboard Replacement, Remove the CPU power: crwdns2935265:013crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Pull the CPU power cable off.

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  15. Dell Optiplex GX620 Motherboard Replacement, Remove the three cables: crwdns2935265:014crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, Remove the three cables: crwdns2935265:014crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Pull the three cables off.

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  16. Dell Optiplex GX620 Motherboard Replacement, Remove the graphics card: crwdns2935265:015crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, Remove the graphics card: crwdns2935265:015crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, Remove the graphics card: crwdns2935265:015crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Push the tab to releases the latch.

    • Push the tab and pull the graphics card out.

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  17. Dell Optiplex GX620 Motherboard Replacement, Remove the motherboard screws: crwdns2935265:016crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, Remove the motherboard screws: crwdns2935265:016crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Remove the six Philips #2 screws.

    • Remove the two green Philips #2 screws.

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  18. Dell Optiplex GX620 Motherboard Replacement, Remove the motherboard: crwdns2935265:017crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, Remove the motherboard: crwdns2935265:017crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Dell Optiplex GX620 Motherboard Replacement, Remove the motherboard: crwdns2935265:017crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Gently pull the motherboard out.

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

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