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Dell Optiplex 7070 MT - Plugging the mains power turns the power on for a few seconds
I have a new Dell Optiplex 7070 MT and I'm not sure if it has issues. When I plug in the power cord from the mains without even pressing the power button on the front, it will automatically power on for a few seconds and off. Is this normal? It's a bit annoying because I always use a manual switch to turn off the mains power after shutting down the PC. Every time I turn the switch on I would have to wait for a few seconds until I can press the power button on the PC.
bradthetechnut
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June 13th, 2020 19:00
Errors won't show because that's normal for Optiplex's and possibly Dell's other tower/case PC's. My 7010, 790, and my previous 755 have all done the same thing. GX620's we had at work in 2006 - same thing. I tried to indicate it's normalcy in my first post, but it didn't work.
If it's that inconvenient when turning on the power,, then leave the power on?
I'm a little surprised Dell-Cares doesn't already know.
bradthetechnut
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June 12th, 2020 22:00
I don't know if Optiplex's did that when they first started out, but I can account they've done that going back at least 15 yrs. The powering on for a few seconds when power is introduced is like a self test it does.
Some people do disconnect power to PC after shutting down. But then they're relying more on the CMOS battery which enables PC to remember not just time & date settings, but BIOS settings also.
polnut
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June 12th, 2020 23:00
I made a short video and published it at Youtube.
https://youtu.be/ed_qxPTU8TI with my tinkerBOY account.
DELL-Cares
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June 12th, 2020 23:00
Kindly share a small video of the issue using google drive/ dropbox we will check and assist you accordingly.^PC
polnut
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June 13th, 2020 03:00
I tried some Power related settings in the bios but non of it works.
DELL-Cares
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June 13th, 2020 04:00
Can we try running the diagnostics by tapping F12 during restart and share the results. ^VA
polnut
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June 13th, 2020 05:00
That’s the first thing I did but didn’t notice any error.
polnut
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June 13th, 2020 17:00
polnut
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June 13th, 2020 18:00
I also posted the results in my blog at Dell Optiplex 7070 Mini Tower Diagnostic.
polnut
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June 13th, 2020 18:00
bradthetechnut
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June 13th, 2020 19:00
You're welcome. Thanks for the kudos and accepting my post as a solution.
polnut
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June 13th, 2020 19:00
I hope there's a technical explanation about this from Dell.
polnut
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June 13th, 2020 19:00
Thank you! This one clearly answers my question. I was hoping Dell knows more about this.
KlausJ68
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August 4th, 2020 11:00
I have a brand new Optiplex 3070, and I have the same issue. Please, can anyone from Dell comment on this behaviour - how can I turn this off?
Thanks,
Klaus
bradthetechnut
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August 4th, 2020 12:00
The few second self-test it does when power is introduced is automated and can't be turned off. It's not an inconvenience.
When BIOS is set to power on when power is introduced, it'll simply power on and boot. If that automatic feature is turned off, it'll still do the self-test when power is introduced.
Please also see my posts above.
You could try @DELL-Cares if you want.