RE: got the windows 10 free upgrade and used the dell diagnostics tool to upgrade driver and bios everything worked fine until the update of the bios!!!!
I called dell they told me in not so many words my motherboard was Fried and they would not replace it.
Dell just saying it's a "possibility" the motherboard might need to be replace. No one can tell you that motherboard is definite "Fried" without first looking at the system.
What is the system model number and version of windows before upgrading to windows 10? Example: Dell Inspiron 3543, windows 10
You're able to boot into BIOS(F2 key) and diagnostic (F12 key) ?
1. Power off computer
2. Power on computer, quickly start tapping F2 key ( BIOS) or F12 key( diagnostic) continuously