Long story short, after wifi antena was replaced, the computer started with that message displayed. I have run diagnostics pre-boot, online diagnostics from Dell website and it have passed all tests. I have reset settings to BIOS default, fabric settings and nothing works. I have a SSD instead original HD, but it has being working fine since replacement 2 months ago. I tried to update BIOS, no changes too.
Long story: a physical part of the notebook broke and I got it fixed by an technical place. After that, I was having trouble with wireless connection, and I thought that the fix they made had to do with it. They checked and said I needed to change a piece but I couldn't left the notebook with them. Then, I took it to someone else and him showed me there were something like glue in the end of the antena and I had to buy a new one. He made the replacement and when I got te notebook back, this message was displayed whenever I turned on the notebook. He couldn't solve it and I haven't found the solution yet since all the diagnostics runs fine. I can use the notebook 'cause it allows me to enter the system, however I get this "Invalid configuration information - please run SETUP program" everytime.
Can anyone help me?
If it's happening with a dead main battery, it could be just a failed CMOS battery (small CR-2032 battery that backs up the configuration settings).
If it's happening with a charged main battery that's working properly, it's likely a faulty system board.
These two places sound like hacks.
It is possible they zapped something by not practicing good ESD protection.
Also, I know that these days being in an enclosed room indoors is not a great situation. But, after getting something "fixed", you need to boot up the laptop at the shop and make sure the laptop boots properly. Suggestion for next time.