After seeing some youtube video, I realised that my 9360 may had a problem. When I boot, there is 2 dell post. My boot time is quite bad, it's about 25 seconds.
I have windows fastboot enable.
Here a video of demonstration of my boot:
I will provide any information, just ask me.
However, I manage to only have one bios post which lead to windows login directly. I still have a blackscreen of about 7 seconde before the post and in total, it's taking 20 second to boot to login.
I think it's still quite slow, i'm sure it can be improved.
Disably thunderblot support for boot did'nt change anything and doing "powercfg -h off" (which disable fastboot) increase the boot time of about 10 second.
You could be experiencing a corrupt windows update. For example: When you power on system, windows try to install latest update but the update failed, therefore whenever you startup system again, the process repeat itself. I suggest you run the System file checker. Please follow steps below:
a) Press Windows key + X key at the same time, select Command prompt (Admin)
b) In the command prompt type the following command: sfc/scannow and press enter
If no corrupted system files were found , then I would suggest you try the following steps:
a) Select Command prompt (Admin)
b) In command prompt, type the following commands and press Enter after each command....
DISM.exe /Online /Cleanup-image /Scanhealth
DISM.exe /Online /Cleanup-image /Restorehealth