Hi Mark, this is very common, it is left over from a malware infection that has been removes already by Defender or your chosen Anti-virus
Task Manager and indeed Msconfig offer only limited control over Startup items . . .
Click the link below to download a small free utility that does not require installation
When the file downloads, unzip it.
Depending on your system, run Autoruns or Autoruns64 as Administrator
With that utility, scroll down and you will find that reference to 'Program'
Right click that and choose 'Delete'
That's It!