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September 10th, 2025 23:47

AIO OPTIPLEX 7420 NEW BLUE WINDOW WITH ERROR - STOP CODE: UNEXPECTED_STORE_EXCEPTION

Last march I bought in Spain an AIO OPTIPLEX 7420 (I´m living in Argentina now) Suddenty the desktop run into this error ... DELL Support Center says its a problem of Sotftware .... so no warranty , while Official agent service of Arg. says its a problem of Hardware instead... Who's right ?? Can really a new unit of Dell technologies has this type of problem,,,???  

They say it could be the chip... so no solution...Do I have to throw it away ...? 

9 Legend

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14.6K Posts

September 11th, 2025 15:21

Try a clean Windows 11 install. 

3 Apprentice

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846 Posts

September 12th, 2025 10:55

Hi

As the device has moved continent....    

Power off the system fully. Reseat any removable drives and check all cable connections if accessible. Hardware issues (especially with the SSD/HDD) are a common root cause.

https://www.dell.com/support/product-details/en-us/product/optiplex-7420-65w-aio/resources/manuals

Check nothing is loose inside.

Also, make a USB with W11 on, ready for an install as suggested by  @redxps630  and go thru the screens to INSTALL, and look for the REPAIR option, possibly Lower left side of the screen....

Boot Windows, open a Command Prompt as Administrator, and run:chkdsk /f /r

There are other possibilities....

Eventually you may need the clean install.

AND YES it could/can be either or both HardWare/SoftWare issues.

If in doubt please ask.

(edited)

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