A disk cleanup often recommended in computing forums is called CCleaner. I don't know whether installing and running it will remove that Recycle Bin stuff from your old profile but I suggest trying it. To minimize the size of the download, I suggest you go
here and download the Basic version. It's the same as the Standard Build except for a Yahoo toolbar which is bundled with the Standard Build. Even if you download the Standard Build, you can elect not to install Yahoo toolbar, and I suggest you do so.
Once installed, run the Windows scan, Applications scan, and Issues scan. Remove everything it finds. The Issues scan cleans Windows registry, so when it prompts you to backup the registry, do so. If you'd like more info on configuring CCleaner, see
Configuring CCleaner.
Check you free drive space before and after using CCleaner. How much space did it free up?