Since you cannot install VSTs on a locked school computer, you need VSTs that are folders (no installer). Download free VSTs that come as .dll files. Place them in D:\VST_Backup . FL Studio will scan them directly from the USB.
Intel or AMD CPU with high single-core performance. Download Fl Studio Portable
(If you'd like follow-up suggestions or a how-to, say which option you prefer.) Since you cannot install VSTs on a locked