Okay I know this is a pain... but I would after following the advise of unchecking TPM that @Aravisian mentioned....do a fresh install again (I assume you'll dual boot) it may take a long time but just let it go from screen to screen. Find something to make the time pass. 4gb of ram is bare minimum so it may take a minute.
recommend at least 35gb (60gbor better is best) to install
I unabled the tpm, i don't have dual boot.
Thank you for making volunteers' life easy 
Fresh install?
Yes sir let it run it's course.. it will take a good 45 mins or more
Your doing GREAT by the way.
That option will overwrite Windows
Do Not choose that option unless it is your intent to Remove Windows Operating system.
Can you please Boot Into Windows.
Open the Control panel.
Navigate to the power settings and browse around to find Fast Boot or Fast Start. Once you find it Disable it.
It locks the drive preventing read /write access.
I think that this option is in the next step of the installer.
I will see
It should offer to Install Alongside Windows
Install zorin on the whole drive
Or
Something else...
You may need to use the something else option, but let's try the other troubleshooting first.
I search it, and i dont have that option.
Windows 10?
Please look up a Windows Guide for Fast Boot and Be Sure on that...
The next suggestion is defrag Windows. Vigorously. It appears that your drive is... heavily populated...
Windows 10 but miniOS.
Before that part, the installer keeps loading infinitely
do you have the ability to re-download Zorin OS and install on USB?
What are you using to create USB install ?
The program that is in the guide.
I put a command in cmd and now I disable fast boot.
Whats Next?.
@Aravisian
Did you use Etcher by any chance?
balenaEtcher
I strongly suggest you remake the USB installer with Rufus in Windows.
That is the problem!!!! Crapware 
