Thanks for posting these issues. This is a fantastic opportunity for OM contributor group to solve some issues a Windows user new to Linux and OMLx encounters. OMLx refers to any version of OpenMandriva operating system including ROME, Rock, and Cooker (development platform).
@Tachyonenstrahl you are asking a lot of questions in one thread. As we resolve these issues other users won’t be able to find the thread with that issue. Because of this we prefer users to post one issue per thread.
Let me attempt to help with one point:
Regarding # 3 if you are logging in to desktop as root why? That is not normal or recommended because it is dangerous, especially for an inexperienced user. Developers only allow logging in as root for the rare occasion when a user can’t login as user, then you can login as root to correct that problem. You can do anything that requires root privilages when logged in as user. Some applications like KUser or KDE Partition Manager will first open a dialog window prompting user for root password. If you use a text editor (Kate or Kwrite) to edit a configuration file that requires root privilages when you select to “save” the file a dialog window prompting user for root password opens. Additionally you can do almost everything requiring root privilages from Konsole (terminal) with the sudo command. If you type a command in Konsole that requires sudo you will be prompted to add sudo to your command.
You can also open Konsole and type su (super user or root) and it prompts you for your root passwd. Be careful with this and using sudo as you can break your system if you do not know what you are doing. For inexperienced user the sudo command is safer than logging in as su.
The first user created when you install OMLx has sudo privileges by default. You can add other users to sudo with the command visudo in Konsole. Again be careful with this because someone inexperienced can do damage with sudo.
I recommend you select the 2 or 3 most important issues and create seperate threads for each and we work on those and get these issues resolved one by one. You may find some answers in the OpenMandriva wiki and Forum Resources guide.
I hope my post proves to be helpful.