Did you make sure to make it impossible to access the internet before trying it? That is really important. Why? Well if anything was trying to update when the original problem occurred (Windows 10 updates no matter if you agree or not), the the computer will continue to try to access and install that update until it has no way to do so. Hence no internet access.
If there is WiFi in the area, turn it off, or move to another area. Then try just restarting (no other things). If an update was part of the problem, that should resolve it. Then you can access the internet (connect again) once it is running.
Should that not work. Next try starting up in "Safe Mode". If it loads in "Safe Mode" then there may well be something on the computer that shouldn't be. Bad program, virus, malware, etc. If that is the case, you will need to find and remove the problem before you can start correctly.
How to enter "Safe Mode" when booting the computer.
In Windows 8 and 10...
As your computer restarts, press F8 (possibly a few times) to enter "Safe Mode"
a. Press the "F4" key to Enable "Safe Mode".
(The computer will then start in "Safe Mode" with a minimal set of drivers and services.)
b. Press the "F5" key to Enable "Safe Mode" with Networking.
( Once "Safe Mode" with Networking starts, Windows is in Safe Mode, with additional network and services for accessing the Internet and other computers on your network.)
c. Press the "F6" key to Enable "Safe Mode" with Command Prompt.
(In "Safe Mode" with "Command Prompt" starts Windows in Safe Mode, with a Command Prompt window instead of the Windows interface. This option is mostly only used by IT professionals.)
Now sign in to the computer with your account name and password. (If you have one set.) When you are finished troubleshooting, you can exit "Safe Mode" restarting your computer.
In Windows 7/Vista/XP...
1. Immediately after turning on the computer, or restarting it (usually after you hear your computer beep), tap the F8 key, repeatedly, in 1 second intervals.
2. The computer will then display hardware information and run a memory test.
3. Next the "Advanced Boot Options" menu will appear.
4. In the "Advanced Boot Options" menu use the arrow keys to select "Safe Mode" or "Safe Mode with Networking" and press ENTER.
If neither of the above help, and it is giving you this much trouble when it is new, then I would contact the manufacturer. They will either have a quick solution for you, or be able to repair/replace it.