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2895
January 1st, 2023 22:00
Montheboard 3070 micro
Hello Dell community! I have a dell Optiplex 3070 micro that won't boot! The power button is blinking orange. It seems that the motherboard has stopped working. Who can help me with information on where I can purchase a new original or second hand motherboard?
redxps630
9 Legend
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15.2K Posts
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January 2nd, 2023 07:00
Before you buy a replacement motherboard try unplug power, press power button for 30 sec, then replace cmos battery with a new battery and clear cmos settings by motherboard jumper.
there is a blue jumper and 6 pins next to cmos coin battery on mobo. The mobo has instructions printout which 2 pins are for clear cmos. pin1-2 are clear cmos. default jumper is on 3-4. move jumper to pin 1-2 for 10-15 sec then move back to 3-4.
ejn63
10 Elder
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30.2K Posts
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January 2nd, 2023 03:00
https://www.ebay.com/itm/363213638906
Sorinel2907
1 Rookie
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January 2nd, 2023 06:00
Ejn63 thanks but Item does not ship to Romanian!
ejn63
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30.2K Posts
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January 2nd, 2023 06:00
Open the system and use the Dell part number (on the board probably starting with CN...) to search locally.
bradthetechnut
7 Technologist
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9.2K Posts
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January 3rd, 2023 18:00
Try a new power supply (PSU) first. Blinking orange can mean bad PSU. Solid orange bad MB.
Sorinel2907
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January 7th, 2023 02:00
Redxps630, it's a solution only it didn't work for me so in conclusion it seems my motherboard failed. The final solution is to replace it only because the product is very hard to find on the market and it is quite big which I think is not worth it. Thanks for the solution, maybe it's useful for other Dell owners who are facing this problem.
bradthetechnut
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9.2K Posts
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January 7th, 2023 11:00
Did you try a new Dell PSU?
redxps630
9 Legend
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15.2K Posts
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January 7th, 2023 12:00
sorry to hear it did not work for you. any chance you recall the led blink pattern?
if you remove both memory, does it blink 3-3 pause then repeat?
https://www.dell.com/support/manuals/en-us/optiplex-3070-desktop/opti3070_micro_sm/diagnostics?guid=guid-1edf2e77-d8af-4820-b4e7-527712c386b1&lang=en-us