If you can tell me what specifically is slow about your computer (e.g., startup times, opening files, browsing), I can give you more targeted advice on how to use AVG to fix it. Alternatively, I can help you find official sources if you are concerned about third-party downloads.
Minimum 1 GB of RAM required (2 GB or more recommended) AVG PC Tuneup 21.2 Portable Free Download - Rahim soft
At least 200 MB of free disk space for the extracted files and operation If you can tell me what specifically is