I have to admit I was leery about hiring someone online, and this was my first Thumbtack experience. I am so glad I utilized this service, and worked with David. David was very professional and great to work with to resolve MALWARE issues which caused all programs to suddenly close and and also my slow computer speed due to unnecessary programs downloaded by grand-kids! He told me what he was doing as he did it, and followed up to make sure the system was working correctly for me. He also advised me to save my data to an external hard drive to avoid problems as my system was backing up to the same area. I would definitely recommend him to friends and family, and will contact him with any future issues with my system. My daughter also thanks him as now the system won't crash when she is completing her timed on-line college test tomorrow! Thanks again for exceptional service and follow-up!