Hey Maurice,
As requested, I deleted MSERT.exe and removed KTS.
I could load the TrendMicro page ok and I attempted several times to download the Housecall Launcher but the webpage kept hanging when I tried to download the Launcher (maybe outdated browser issue... I'm not sure), so I downloaded the Launcher file using another device and transferred it to the computer. However, when running the file it would get to 67% and then throw an error msg relating to "an internal error" (error msg attached, and yes I ensured that it was the correct platform and version), I tried to run the file several times but got the same result each time.
The 48hrs has expired and I still appear to have all files intact on the computer, so possibly it was just a phishing email and I will take your advice and purchase a new updated desktop computer to migrate to. I apologise if I have been an inconvenience or wasted your valuable time and sincerely thank you for your patience in dealing with my issue.
One last thing, do you recommend installing another AV program to run alongside MB on the new computer and if so, which one do you suggest?
Regards
Octagonal1