I just upgraded to Windows 10 from W7, but an issue from 7 remains. When my computer freezes, all the icons in my taskbar rearrange themselves into an unintended order--mainly within the individual programs since I pinned my main icons to the taskbar. This issue seemed to have resolved itself when I upgraded to 10, but it just occurred again. I had an I.T. guy look at my computer when I still had 7, and he determined that the issue was not hardware-related, and he suggested that I clear my hard drive and reinstall the operating system. Are any less-drastic repair options available? I've run numerous anti-virus and anti-malware scans, but nothing has been detected. Thank you for your assistance.