Subnautica is currently in Early Access and as such you may find gameplay bugs and weird glitches.
It would greatly help us out if you could please post your issues with as much detail as possible (video/screenshots/descriptions), followed by the following requested information...
Things to include in your report (if possible)
Example Topic Title:
[Bug] Seamoth Is Turning Blue! [Version Number]
Contents of Bug report:
Subnautica Version - This can be found in the top right of your game when playing Description - What is wrong, in general terms Reproduction steps - Detailed steps on how to reproduce your problem. This makes it a lot easier to fix! Pictures or Video - Pictures can be uploaded to imgur.com, videos to youtube.com output_log.txt (Error Log) - If applicable. Instructions: http://steamcommunity.com//sharedfiles/filedetails/?id=403087864
Anything you find with reproduction steps, with images and/or video should be posted. Posting something like "this is broken" doesnt help us fix the issue. The more information, the better!
Other users can also chime in on the topic, post their screenshots and discuss reproduction steps.
Thanks so much for helping!
Even if it won't open, that log is sometimes created, as far as I know. You're saying you checked, and the log isn't there? If so, is there any dated folders in the Subnautica main folder? Sometimes it manages to drop the logs there if it's having trouble (don't know why).
What are your system specs? To find out, download and run Speccy, then click File > Publish Snapshot, and then copy the link it gives you here.
Please also post the output of dxdiag (click start, type dxdiag, and click the "save all information..." button, then upload that file somewhere like Google Drive, Dropbox, etc, and post a sharing link here)
Now, just to cover some bases:
1) Make sure Windows is up to date (run Windows update and check for updates / install them until it says your system is up-to-date)
2) Make sure your graphics card drivers are up to date (go to your card manufacturer website - usually AMD (previously ATI) or nVidia, sometimes Intel). Some people have problems getting their new drivers to take correctly, and have to use DDU to completely uninstall the leftovers of old version(s) first.
3) Try verifying the game files in Steam (right-click Subnautica > Properties > local files > verify game cache)
4) Try uninstalling, verifying the Subnautica folder is gone ( \Program Files (x86)\Steam\steamapps\common\ ), and then re-installing.
Hmm. Might want to try your profile again if it was lack of permissions (perhaps Subnautica needed to install Visual C++ Redistributable on first run, and couldn't because of no Administrative permissions?). Thus, running it once from your Dad's profile might have fixed it. Could you try and let us know if it works on your profile now?
Comments
What are your system specs? To find out, download and run Speccy, then click File > Publish Snapshot, and then copy the link it gives you here.
Please also post the output of dxdiag (click start, type dxdiag, and click the "save all information..." button, then upload that file somewhere like Google Drive, Dropbox, etc, and post a sharing link here)
Now, just to cover some bases:
1) Make sure Windows is up to date (run Windows update and check for updates / install them until it says your system is up-to-date)
2) Make sure your graphics card drivers are up to date (go to your card manufacturer website - usually AMD (previously ATI) or nVidia, sometimes Intel). Some people have problems getting their new drivers to take correctly, and have to use DDU to completely uninstall the leftovers of old version(s) first.
3) Try verifying the game files in Steam (right-click Subnautica > Properties > local files > verify game cache)
4) Try uninstalling, verifying the Subnautica folder is gone ( \Program Files (x86)\Steam\steamapps\common\ ), and then re-installing.
Output log pastebin: https://pastebin.com/JQhRMzc7
DxDiag pastebin: https://pastebin.com/ie6ZaXYM
There's a fix in the fourth line of my signature. (Subnautica launches in a tiny window).