Mac Mini mid 2011 with High Sierra and Windows 10 1709 (Bootcamp v5). Freezing at boot menu

I'm aware of that, it worked just fine til some days ago. Well, it used to boot into Win10 successfully only after several hours after i used Mac OS (that's weird). I was talking about BC5 assistant. I guess in the last couple of years I updated two or three of drivers, nothing important. I have automatic updates turned on and I remember the graphic card drivers are the only update i received from Win Update (apart from the usual ones). Yes, I upgraded from Win8.1 a couple years ago without any problems. It's High Sierra 10.13.3

Intel i5, 8gb RAM. After I replied to your post I restart from HS and It booted into Windows. As I said it does seem to work only in the evening, and not directly after it's being turned off all night. I forgot to mention...This afternoon i reset the PRAM with no luck.

Bios is in "Legacy" mode and yes I have Tuxera NTFS 2018 (previously Paragon NTFS) installed to access and modify the data in my external NTFS formatted portable 1 TB drive. Will that SMC reset destroy any data or restore the O.S. to factory default?

I reset the SMC with the Destkop Mode and nothing improved. What shall I do? I mean, I have 90% of my data on the external disk including my work data...When I disconnect it during booting into Win10, that doesn't resolve the issue.

Sorry, but it didn't work. I uninstalled Tuxera clean with CleanMyMac and did both resetting, did a full cleanup, rebooted and unplugged the usb dvd writer and the external drive and tried to reboot into Win10, but the boot menu still freezed. More suggestions? I really need Win10 to work.

Maybe I haven't been clear about what happens. 1) I press Alt+C and the boot menu appears. 2) I choose the Bootcamp drive and it just freezes there. I can't move the mouse cursor and I can't move to any of the selection. After a couple of seconds the light on the wireless keyboard receiver fire up and the fan start rolling, like it's about to boot, but it just stays there. In the worst moments it used to boot after, like, 15 minutes, that just doesn't happen anymore, though.

It's the same with a Win10 1709 installation dvd.

Nome volume : BOOTCAMP

Tipo di volume : Volume fisico

Nome dispositivo BSD : disk0s4

Punto di attivazione : /Volumes/BOOTCAMP

File system : File System Windows NT (NTFS)

Connessione : SATA

Percorso albero dispositivo : IODeviceTree:/PCI0@0/SATA@1F,2/PRT0@0/PMP@0

Scrivibile : No

Distingue maiuscole/minuscole : No

UUID file system : 74DD627E-AF62-4025-B44F-3ED6229ADE72

Capacità volume : 121.247.891.456

Spazio disponibile (cancellabile + libero) : 26.135.949.312

Spazio cancellabile : 0

Spazio libero : 26.135.949.312

Spazio utilizzato : 95.111.942.144

Conteggio file : 357.899

Proprietari attivati : No

È codificato : No

Protezione integrità di sistema supportata : No

Verificabile : No

Riparabile : No

Avviabile : No

Journaled : No

Numero disco : 0

Numero partizione : 4

Nome supporto :

Tipo di supporto : Generico

Può essere espulso : No

Stato solido : No

Dischi padre : disk0

Today it's 2:50 p.m. and the sun is shining in any possible ways, because it finally booted at once into Win10...in the daylight! :-) As ridicolous as it may sound, my Mac has always started booting faster into Windows with a warmer weather. Heating problems maybe? Could you hang on another day, please? So we'll see how it will behave tomorrow and then I will do some checking with the Windows diagnostics tools in the DVD... If it let me. Thank you very much. Back to work.

Here is today's report. Yesterday after ignoring the "alt" command twice it booted into Win10 after I chose the Windows partition in the boot disk menu, in which by the way the two icons take about a minute or so to show up. Today we are back to the same old. I am trying the same boot disk menu method as I did yesterday. New ideas? Thanks.