Optiplex 7010 won't turn boot

Question

My Optiplex 7010 (end of life) won't start turning on

-Already tried the BIST test, PSU fan and Pc fans work while bist led turns on

-LED diagnostic Test - 2, 3 amber light and not turning on

-Tried replacing cmos and ram stick (still won't work)

bradthetechnut · Accepted Answer

From A Reference Guide to the Dell OptiPlex Diagnostic Indicators:

2, 3 two blinks followed by a short pause, three blinks, long pause, then repeats. Bad Motherboard, Memory, or Processor

If you can troubleshoot, narrow down the issue by reseating the memory and swapping a known working memory module, if available.

If nothing works, replace the motherboard, memory, or processor.

A bad PSU on its way out can still spin the fans when test button is pressed. But I'm not sure that's it. RAM goes out a little more often than an MB. Rarer it's an MB problem, but not impossible. Used/refurb MB's are cheap on eBay for the 7010. CPU going out is rarer than MB going out.

What did you try on it for new RAM?

redxps630 · Accepted Answer

2012 optiplex 7010 2,3 led = bad motherboard or ram try a verified working ddr3 ram (single stick).

redxps630 · Answer

If you already replaced cmos battery w a new one, then try clear cmos setting by motherboard jumper

TakenChromosomes · Answer

My Optiplex 7010 (end of life) won't start turning on

-Already tried the BIST test, PSU fan and Pc fans work while bist led turns on

-LED diagnostic Test - 2, 3 amber light and not turning on

-Tried replacing cmos and ram stick (still won't work)

Note: This comment was created from a merged conversation originally titled My Dell Optiflex 7010 (end of life) won't turn on

bradthetechnut · Answer

Redxps calls is clearing CMOS.  I call it BIOS reset.  Don't forget to do a BIOS reset as redxps suggested.

TakenChromosomes · Answer

@redxps630​ How to clear cmos setting via motherboard jumper?

TakenChromosomes · Answer

@bradthetechnut​ It was a refurbished 2x4 ram. Does a barebone desktop same model will work if it is swapped from mb?

TakenChromosomes · Answer

@redxps630​ Already did rtrcst jumper, still doesn't work

bradthetechnut · Answer

'Does a barebone desktop same model will work if it is swapped from mb?'  Sorry, I'm confused with the question.  Could you try rewording it?

TakenChromosomes · Answer

@bradthetechnut​ So I saw a pc unit seller in facebook marketplace - It was a seller of a barebone desktop unit (only mb & psu, no hdd & ram and different processor) same model in a cheaper price that I can afford. Will buying a unit from there and swapping out the parts suffice?

TakenChromosomes · Answer

Thanks for the replies and tech tips! @redxps630 and @bradthetechnut . Turns out it was a ram stick problem. Before, I tested all of the ram stick nilly willy without order (the reason why it still not works after many tries). But now I tested all of the ram one by one until I got through the source of the problem, one singular 4g of ram. Thanks so much for the fix tips

bradthetechnut · Answer

You're welcome and glad you got it working.  :)

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Optiplex 7010 won't turn boot

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