there are many reasons behind this upgrading Windows 7 or 8/8.1 to Windows 10 PC. This is less common for machines that had Win 10 as their first OS. The main reason why this issue might occur is some sort of incompatibility between different elements of the PC software/hardware and Win 10, which were not present back when Win 7/8 was installed. One of the most common causes for random Windows 10 freezes is a driver incompatibility. However, there are a number of other possible reasons behind this issue.
1 corrupt files
2 outdated PC Drivers
3 incompatible programs