Is SSH enabled on Your RPi?
AFAIK You can't open a local terminal window in LibreELEC (KODI).
You must connect via SSH with Putty (or maybe WinSCP) if You are a Wiindows user.
Adding to trogggy 's comments, I'd try to do a proper (no quick format) re-format those USB-sticks on Your computer and try again.
If thet doesn't do any difference I'm agreeing with trogggy regarding value of these sticks...
Maybe You could borrow one/two spare USB-sticks from someone and try with these?
I'm using 16/32/64GB USB-sticks across my different LE computers and various RPi installations. All formatted with FAT32 or NTFS and these works without any issues.
1. Does any of the "LibreElec TV boxes" detect any USB stick?
2. What filesystem does Your USB drive use?
AFAIK the NTP servers only communicates via port 123...
So talking to Your ISP for alternatives might be an option.
Normally NTP services use port 123.
That shouldn't be blocked since all devices update the date/time via port 123.
Verify that You have NTP server(s) defined in setiings: https://wiki.libreelec.tv/libreelec_settings?s=ntp#tab__network
You can always try these (verify regional settings!):
My bad... Meant 'graphics card'
Same behavior with other TV/monitor?
BTW, what display adapter do You have?
Have You tried with different TV and/or monitor?
If Your TV has different HDMI modes (I.e.: PC, Game Console,...) have You tried different modes?
It sounds like Your NUC is switching to unsupported resolution or frequency.
(Any setting in BIOS?)
I'm using Rii i7 mini's as well and yes, there are few scenarios where the only way back is to enable mouse cursor and click close to top-left (depending on where You are stuck of course) to get back to main menu.
A bit annoying but I haven't found a way to make home or back buttons to working in those cases...
Maybe someone knows... A big thanks in advance in that case!
Ohhh... sry... Didn't see that You had a fresh install.
Ignore what I wrote regarding workgroup...
There is a updated "samba.conf.sample" that should be used as base for samba.conf.
Rename existing samba.conf to samba.bak (or whatever else...)
Rename samba.conf.sample to samba.conf
Edit samba.conf, add Your shares, restart.
That should make it work...
Did You try renaming/removing of samba.conf and adding Your shares to the new samba template including workgroup name?
That 'should' help...
Does the DB 'Main_Video107' exist?
Default DB name is (at least on my setup) 'MyVideos107' (defined as 'MyVideos' in 'advancedsettings.xml')
Does the DB connect info look identical on all "clients" (check contents of 'advancedsettings.xml')?