Desktop Performance Optimization & Troubleshooting

I am seeking assistance with my desktop computers. They are experiencing performance issues and I suspect it might be related to hardware or software. The ideal freelancer for this project should have:

- Extensive experience in hardware & software troubleshooting
- Strong background in optimizing system performance
- Excellent communication skills to explain issues and solutions

Please, if you have a proven track record in dealing with similar issues, don't hesitate to bid.