Just scanned it (full system and then boot) with Avast, nothing detected -.- I installed a lot of softwares so if possible I would like to stay away from refresh/reset Windows. Well, if it becomes...

Update: Not only many items went missing, around the same time, I could not drag and drop to some softwares, eg. mp3tag and some games.

Thanks for your help. Actually, I had done those before asking here. But I want to recover the context menu to how it was before, there are still many items apart from New and Intel HD Graphics...

Short version: Title

Long version: Also title. And I checked inside Programs and Features to see if any programs did this. Only Adobe Flash Player + Firefox + Avast updating themselves, and I...