My PC Acer Predator G3-710 keeps freezing at start-up

Sorry, I do tend to skip the details sometimes.

A network share is when you have the files on one computer available for a different computer over your network. For a long time Microsoft has had that built into the OS via your Homegroup, though they have started moving away from that lately. When you have it setup it can be really useful because you can (for instance) have all your music on one machine but listen to it from any. When you connect to the share on the remote computer it can be a temporary connection that has to be redone each time you want to get to that data or it can be a more permanent connection that shows up automatically each time you boot. In the latter case if you do something like turn the remote computer off you can get a rather long timeout when starting your computer as it tries to find and connect to the share. That timeout is a magic number of 90 seconds, so halts during startup of 90 or 180 seconds tend to point to a network issue.

Another time you sometimes see that sort of delay is also network related. Some malware can redirect your internet access through a proxy server that the malware authors have setup. They can then watch everything you do online, including capturing your login and passwords. If that proxy server has gone away (it's only up for a short while before the good guys block it usually) then anything over the internet will either not work at all or be very slow to start, as your machine tries to make a connection to the machine that's no longer there. This is much less likely to be your problem since it usually doesn't do that much during the boot process.

One thing we can do to help analyze the boot is create a boot log, then look in it for what's happening during long pauses. If the boot process is trying to start something that is taking too long to finish it'll typically show up there.