I'm looking for someone to give my desktop a thorough cleanup and optimization. The computer runs slowly, has a lot of unused programs, and I’d like a fresh start: remove unnecessary software, clear cache and temp files, organize files, run a malware scan, and help optimize startup programs. I’d also appreciate tips on keeping it tidy and secure. Preference for patient, easy-to-understand explanations and a quick on-site or remote session depending on what’s possible. If you can provide a brief plan and estimated time, that would be great.