9 Posts
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819
June 19th, 2023 03:00
OptiPlex 3050 power button flashing “bad motherboard”
We’ve just had a powercut. The UPS kicked in and I hibernated immediately. But now when the power’s back, it won’t start up. I have the power button flashing amber with 2 then 1 flashes, which appears to be a “bad motherboard”.
I realise the PC might well be toast, but is there anything I can try before replacing it?
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Chino de Oro
9 Legend
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8.2K Posts
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June 19th, 2023 03:00
Remove all external devices and power from the machine.
Press and hold power button for 15 sec. to remove residuary power.
Open side panel and perform CMOS reset via jumper, give it a fresh CR2032 batt while working on motherboard.
Reassemble everything and test system again.
If machine regain its functioning, access BIOS firmware and restore settings.
ThudnBlundr
9 Posts
0
June 19th, 2023 03:00
Thanks. I’ll have a go. I’ve opened it up to have a look and I was wondering about the battery as it must be old by now. I’ll let you know how I get on
ThudnBlundr
9 Posts
0
June 19th, 2023 04:00
Thanks. That seems to have worked. It’s restarting as I write
Was it just the battery or do I need to think about replacement?
Chino de Oro
9 Legend
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8.2K Posts
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June 19th, 2023 05:00
Glad to hear the issue was resolved.
Coin cell batt is a low cost maintenance and can be done at your convenience.