the tabs showing features, sketch,etc have disappeared off the user interface.
Likely i somehow double clicked and dragged when i should not have.
Under tools , customize I have checked enable command manager but i cannot get the tabs to reshow. I can get the various toolbars to show up, but not the tabs.
Maybe it's on full screen. try pressing F11.
It is not the feature manager nor full screen prob. The tabs for the command manger have disappeared.
A while back I had a problem not exactly like yours, but in some ways the same.
Later I found out it was because of Windows corrupted user profile.
I think it's worth trying.
Logout of windows and login to another account. See if you have the missing tabs there.
Have you tried right clicking on the top bar to see if "CommandManager" is checked?
Checked files from another account and yes the tabs were there.
Fixed problem (with help) by hiding the Soldiworks folder and reopening the program. Basically forcing a reinstall.
After that you have to repoint to any templates you have created.
If you are looking for the feature manager that is by default on the left of the screen, it may have been collapsed. If so, there should be a very small tab with arrows on it that you can click to expand the tree.
I recently took a position with a company using solidworks and apparently the previous user has the interface set up to automatically hide in the margin. Haven't figured out the setting to stop that yet.