Tony, welcome to the Forums!
Just to be sure that the problem is not with the printer itself, try printing to a "software printer". There is usually a XPS printer installed by default, or you can download and install a pdf printer. Use these to print your files and see if the problem is with the spooler or something else in the system. If that works out OK, I would simply try another printer. I am not familiar with SAVIN brand, but if another printer works fine, then the problem is specific to this particular printer. At that point the problem could be solved either by installing an updated driver
or by replacing the hardware. You could try printing from another machine to see if there is a hardware problem, of course.
To be honest, I don't see how a version of a doc file can affect the printing process. If BIOS or memory had problems, you would see them manifest themselves in more than just an intermittent printing problem.
Finally, is the printer connected via ethernet or wirelessly? By the way, what happens if you connect the printer with a wire directly to your PC?