I bought a Dell 7370, after installing Windows, Bios Update and driver (latest was graphic drivers) the laptop went into black screen. So when Iam starting it only power LED, charging LED and Keyboard light is working and I can here some coil whine.
I chatted with Dell Support an das long I have no working Service Tag they cannot help me with physical Support.
I already tried some things, like almost total disassembling the notebook.
Further I tried forced ePSA and the bios recovery. In both cases the display doesnt show anything. In case of the bios recovery with USB Stick (Formated with FAT32 and containing the renamed Bios file) I can see that the USB is working (Usb led is lighting). With a normal start up its not lighting. But I dont know what to press to maybe start the recovery, maybe someone can tell me how to trigger the recovery without seeing anything on the display.
The only thing that works i tried today is starting with pressing „D“, so in this case the Display works fine and shows the colors.
Maybe somebody has an idea what I could try here or can help me with the Bios recovery.
P.S.
I bought the Notebook in Germany for a cheap price and it was working well at the beginning (it has an english keyboard). Inside the Notebook I can read a lot of stickers with rev. 0.1 and (08.2015) and the Bios at the beginning was 99.1.4. And under the keyboard is says Latitude E7370 instead of Latitude 7370. Could it be that this is some pre model or something ? In Germany they tried out to find the Service tag with the serial numbers from the charging cable and the battery, but they said these parts were bought seperately. It just seems theres something weird about the notebook…