Right-click at the top of your screen to get the list of toolbars. At the bottom, click on "Customize..." (you might need to click on >> pointing down to get it to show). When the "Customize" dialog box comes up, you should have all available Tabs showing. The inactive ones will be grayed out. Right-click on the ones you want to add and choose "Show Tab". Then click OK at the bottom of the "Customize" box. If this doesn't work, then you may have a problem with the installation.
If this does work, you can save your settings with the "Copy Settings Wizard".
I've already tried this. Problem is, i don't nave the same tabs i had before, they aren't automatic and Drawing don't have any tabs and it's my first time i use drawing so i don't know what tabs are useful. There is a method to totally reset solidworks without reinstalling it? Or a solution to this problem?