please help
See my comments in this thread: coral X8 box install problem.
That was a case where the DVD-from-the-box would not install (Windows 7; May 2017) because the installer was not able to cope with the fact that some newer versions of some Microsoft components were present on the machine.
In my case, the error message was misleading. The problem was not a previous installation of CorelDRAW.
The solution was for Corel support to get me a newer version of X8 that incorporated some updates. That installed without any problems.