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Chrisclin

3 Posts

172

December 16th, 2023 13:40

My 7020 thinks it's a 9020

I bought a refurbished Optiplex 7020. When I set it up it seemed fine until a couple of Windows 10 updates were applied. Then the monitor started losing power. It would then come back for varying lengths of time, mostly very short. Eventually I got into device manager and found that the monitor PnP had failed to migrate. I tried downloading a driver off the dell site for a 7020. Then I tried the website again using the Dell service tag and it told me there was a critical update due for BIOS so I did that to A25. Still no solution!

During my googling I discovered 7020 should only have BIOS A18. On closer examination of the service tag Dell thinks it's a 9020. I tried downloading the BIOS for version A18 but when I tried to update the machine it told me I couldn't use 7020 BIOS for a 9020.

I'm now deadlocked and don't know what to do next. I can only see the screen when it powers up for a couple of seconds - and that even happens when I manage to tap F2 at the right time. The screen works perfectly when attached to my ThinkPad.

redxps630

9 Legend

 • 

11.8K Posts

December 16th, 2023 14:05

Try Replace cmos battery w a brand new cr2032, then clear cmos settings via motherboard jumper.

Try not to flash bios unless absolutely needed.

Chrisclin

3 Posts

December 16th, 2023 15:26

Thanks for the suggestion. How exactly do I 'clear cmos settings via motherboard jumper'

redxps630

9 Legend

 • 

11.8K Posts

December 16th, 2023 15:47

  1. Before you begin, follow the Safety Precautions When Working with Electronic and Electrical Equipment.
  2. Turn off the computer and disconnect the power cable from the computer.
  3. Remove the computer cover. 
  4. Locate the 2-pin password blue jumper labeled PSWD on the system board.
  5. Remove the 2-pin jumper plug.
  6. Locate the 2-pin CMOS jumper labeled RTCRST or CLR CMOS on the system board.
  7. Move the 2-pin jumper plug from the password jumper to the pins on the CMOS jumper.
  8. wait for 10 seconds for the CMOS to clear.
  9. Move the 2-pin jumper plug back to the password jumper.
  10. Replace the computer cover.
  11. Connect the power cable to the computer and turn on the computer.

(edited)

Chrisclin

3 Posts

December 23rd, 2023 15:24

Well, I replaced the battery but couldn't find the jumpers you referred to. Eventually I gave up and decided to try again. There seemed to be no difference. Then I tried reattaching the screen to the laptop - and got the same problem. Somewhere in the process of transferring the screen from the laptop to the desktop it triggered the intermittent fault.

I got hold of a refurbished screen and it works fine.

HOWEVER, it still thinks it's a 9020 despite it being badged as a 7020. How can I be certain what model it is?

redxps630

9 Legend

 • 

11.8K Posts

December 23rd, 2023 17:21

the DP/N on a small white sticker of the motherboard will id the exact model of board, whether it is 9020 or 7020.

example 

CRD,PLN,SFF,9020,OPTI,V2
CRD,PLN,SFF,7020,OPTI.

Card,Planar,Medium Tower,9020,Optiplex,Third Party Maintenance,V2+.

Card,Planar,Medium Tower,7020,Optiplex,V2.

bradthetechnut

6 Professor

 • 

8.2K Posts

December 23rd, 2023 21:17

It definitely sounds like your MB was replaced before you bought it.  Use 9020 drivers and see how it does.

Some refurb places don't know or don't think there's a difference between certain Optiplex models.

You might be happy to know with a 9020 MB, you have 32GB max spec RAM.  Some have pushed it to 64GB, as they have pushed 7010/7020 models to 32GB though max spec is 16GB.

(edited)

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