New
#291
I re-installed everything. It seems ok now.
To be fair with the o.s., I suspect that the issue was caused by a "cracked" version of Corel Draw x3, which seemed to run ok on Windows 7, but which caused this problem to Windows 10.
On the other hand, even a cracked version shouldn't upset the OS that bad. And of course, there should have been a better policy as far as updates are concerned.