HP 250 G4 - Board CT number missing or invalid

[Teapack13]

Hi I have a question about this specific problem. When I turn on notebook, it shows me that Product information is not valid.

System board (00A) - Board CT number invalid or missing

with this problem, another problem is occurred. Notebook is not charging... Only when notebook is turned off, battery is charging, but in windows...  nothing. I searched and found this problem is known, but no solution helped me. I tried DMI Tools (HPBC375.exe). Following instructions, I found CT Number printed on mainboard (14 chars) and with DMI tools,  "write information to EEPROM".  

When I display system informations in DMI tools, it shows the same CT number I've write down, but immediately after starting the notebook, it Shows me Board ID - "HP" and Board CT number - "HP". So I'm stuck here... 
In DMI Tools I have only CT Number option, but no Board ID ... 

I tried flash BIOS and it helped.... No allert shown, windows started, battery charging and working fine... after restart, the problem has returned. I tried flashing bios again, but after first flash, I have never accomplish neither the same result as in my first try. BIOS is latest F.24 version

Mainboard is original, not changed. I can't unfortunately tell when this happend, because the notebook is used by more users.

Please can somebody help me ? Thanks

[Luca31394]

I have the same exactly problem. Did you solve it?

Thank you

[Teapack13]

Hi, after hours and number of tries of everything.... I found out, that DC  jack connector in notebook is broken. I bought new one, replace it and it works like charm... May this help you too. GL