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I cleaned up my notebook a bit today and removed it by around 15GB. Then I emptied the trash. But the files aren't really deleted, are they? I just heard that they are not completely deleted. Does this data still affect my notebook and should I remove it? (If so with which tool) Or does this data not affect my notebook?
As long as your notebook is not at 5% free memory, you will probably get next to nothing.
A notebook becomes faster with better hardware
You should format your notebook
Deleting data doesn't bring a lot of pure performance. The response may become a little better.
Deleting files simply marks the space on the hard drive as "free". Deleting the file completely irretrievably would make no difference (it's safer, but doesn't make it better or worse in that sense). Because even after a safe deletion, "the emptiness" is still "saved".
And now defragment. That would bring a bit.
Even with an SSD?
Yes, exactly.
With https://www.ccleaner.com/...r/download you can get rid of a lot of data garbage. Even in the basic settings, this can be several GB, which are hidden in your operating system, which are no longer required but are constantly loaded into the working memory. This is unlikely to slow down your system.
Entries in the registry that are no longer required can also be deleted with CCleaner. You can't go wrong with the basic settings. The program issues warnings if it looks hairy for the operating system and an incorrect setting should be made. The program also offers the option to undo everything.
Try it out and you will see that your PC will work faster.
I have been working with CCleaner for many years and have always been very satisfied with it.
No, you don't defragment SSDs.
No: Not with an SSD. You shouldn't defragment them at all, because firstly, access to files won't be faster, but regular defragmentation will shorten the life of the SSD.
The fact that Windows installations work more slowly with increasing age is an inherent weakness of Windows.
