Now you have explained that you are using the system in a cold environment, I have a better understanding of the problem.
The most likely scenario is that the hard-drive (Hard Disk) is beginning to fail or is rather old, cold and tired. You are seeing a normal Boot Screen, that you would normally miss because it is normally quicker. That is all. Sometimes these systems have CF drives in which are always slow, but I thing yours is an old PATA drive judging by the capacity on screen.
So do the following:
1. Open up machine.
2. Replace the Bios Battery (That was what your “technician” mentioned.) always a good idea.
3. Clean all connections especially to the hard drive. Use a compressor on low setting.
4. Unplug and re-plug the hard drive.
5. Make note of hard drive – get a replacement.
6. Clone hard drive using Ghost or some other cloning software.
7. Replace the hard drive with the new cloned hard drive.
8. Read through some of the manuals and watch the video links I have sent.
9. Get the company Boss (Is that you????) to hire someone who knows about computers and robots.
10. Finally at night before you shut everything down and turn out the lights. Leave out cookies and milk for the Robots and perhaps a large play football. That is when they come alive, because there is no one to watch them.
https://support.focusintegration.com/knowledgebase.php?article=5
https://www.scribd.com/document/548757753/English-Manual-KR-C4-Extended-NA-En
I am afraid although I used to design Pharmaceutical Manufacturing plants, I am now retired and I am rather tied up this Christmas stopping my mother-in-law from eating the Christmas decorations. My daughters think it is funny, which I find rather annoying, as they are both doctors and should be dealing with this while I deal with the roast and dinner.