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May 22nd, 2020 03:00
Optiplex 780 1 & 3 lights
i have a second hand optiplex 780, the first time i tried it, it was working but then it shut off. 1 week later i tried it, the monitor won't on and the cpu lights up saying 1 & 3. A orange light is in the cpu too.
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fireberd
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May 22nd, 2020 03:00
Potentially a memory problem. Here is what Dell says about this
1 3
Memory is detected, configuration or compatibility error
Reset the BIOS and clear the NVRAM and any previous errors
Remove all memory from PC, (This includes any Graphics cards.) does the LED code change?
If it doesn't contact your technical support
If it does add the parts back one at a time until the fault re-occurs, test that part in another slot and contact your technical suppor
bradthetechnut
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May 22nd, 2020 18:00
Orange light on the MB -.that part in normal - means it has power.
Don't know if you already tried reseating the RAM. The size 2032 CMOS battery lasts around 5 yrs. The 780 goes back to 2010. So, either way, I'd replace the battery. That's the first thing I had to do with one refurb Optiplex I bought.
Fireberd is right about error codes 1 & 3.
Dell Diagnostic Indicators
Optiplex 780 Tech Guide