Hello Theo_P,
There are few steps I would suggest, which might help us in fixing the issue:
- Restart the laptop and start tapping the F2 key at the Dell logo for enter the BIOS.
- Navigate to the “Advanced” menu.
- Change the SATA operation/selection in BIOS from Intel Smart Response to AHCI.
- Press F10 to save changes and exit.
- Reboot the system.
- Go back into the BIOS by tapping the F2 key and change the SATA operation/selection in BIOS from AHCI to Intel Smart Response.
- Save changes and exit by pressing the F10 key.
- Reboot the system and it should boot normally into Windows.
In case the above steps don’t fix the issue, run the Pre-Boot System Assessment (PSA / ePSA) Diagnostics. Run the test and check if gives any error code. Note down the error code and update me with the same, would let you know the next course of action.
Please write back with results.