Optiplex Desktops

Last reply by 09-13-2022 Solved
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Dell Optiplex 980 SFF error code 34 or 3 after force shut down

I have a Dell Optiplex 980 SFF 12 GB RAM, i3 540, PNY GT 730, Samsung 840 EVO SSD. After a force shut down, error code 3,4 or 3 flashes and the PC won't turn back on for an hour or so. I don't know what causes this but I'm sure somebody out here knows. I don't usually do force shut downs unless it freezes which happens sometimes.

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A little caveat if trying a PSU tester.  If I remember right @redxps630 , 980 MB's have mini 24-pin connection instead of standard 24-pin.  For PSU tester, 24-pin to mini 24-pin adapter would be needed.




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422

Try replacing size 2032 CMOS battery. 

Remove GPU and use onboard graphics.  How does it behave?

Optiplex 980 Service Manual has diagnostic lights.

Also sounds like a PSU on it's way out.  2 ways to test:  1. Try another PSU.  2. PSU testers on Amazon.  Before going through the PSU possible trouble, go according to diagnostic lights after changing battery.




- Please kudos posts you like!
- Please "Accept as Solution" posts that are a solution.
- If you have an Optiplex, stating its model number AND size speeds up troubleshooting. Components vary.

Code of Conduct
TechSupport YouTube

I'm a big fan of Dell, a Dell user, and not an employee. This forum is user to user with occasional assistance by other Rockstars or Dell employees.

421

A little caveat if trying a PSU tester.  If I remember right @redxps630 , 980 MB's have mini 24-pin connection instead of standard 24-pin.  For PSU tester, 24-pin to mini 24-pin adapter would be needed.




- Please kudos posts you like!
- Please "Accept as Solution" posts that are a solution.
- If you have an Optiplex, stating its model number AND size speeds up troubleshooting. Components vary.

Code of Conduct
TechSupport YouTube

I'm a big fan of Dell, a Dell user, and not an employee. This forum is user to user with occasional assistance by other Rockstars or Dell employees.

407

 

8B25F1BC-8EF3-4A66-91BF-966F4FE6BC80.jpeg

 

agree that replace cmos battery is good idea. also try clear cmos settings by using motherboard RTCRST jumper.  see diagram below. move blue jumper on #15 to #2 pins x5 sec then move back.  do not think it is psu issue.

redxps630_0-1663001796469.jpeg


404

Link above has too many pop-over ads.  Service Manual has none.  If diagnostic lights change after replacing the battery, see diagnostic lights in the Service Manual.  Easy search using "diagnostic lights."




- Please kudos posts you like!
- Please "Accept as Solution" posts that are a solution.
- If you have an Optiplex, stating its model number AND size speeds up troubleshooting. Components vary.

Code of Conduct
TechSupport YouTube

I'm a big fan of Dell, a Dell user, and not an employee. This forum is user to user with occasional assistance by other Rockstars or Dell employees.

371

Hi @redxps630,

You deleted your post (no need), but I still saw the email.  Thanks for a suggestion of using Safari.  All I could turn off in Chrome is ad personalization.




- Please kudos posts you like!
- Please "Accept as Solution" posts that are a solution.
- If you have an Optiplex, stating its model number AND size speeds up troubleshooting. Components vary.

Code of Conduct
TechSupport YouTube

I'm a big fan of Dell, a Dell user, and not an employee. This forum is user to user with occasional assistance by other Rockstars or Dell employees.

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