The driver was the old USB to serial prolific version - but this was troublesome with Windows 7 onwards. The trouble is some cables use counterfeit chips, some real.
Try this linkhttp://www.prolific.com.tw/US/ShowProduct.aspx?p_id=225&pcid=41
It won;t hurt to try it. If not, TYT will probably send you one if they ask - they're usually quite helpful. If you Google prolific usb to serial radio driver you will get quite a few returns where windows won't play ball - and there are some youtube videos too.
I actually programme my radios now with an old XP computer for ones where my programming cables are really a problem. The TYT one I have is quite modern - but still a 50/50 chance with Windows 10.
Our callsigns are about the same vintage - with yours being a tad older - so 40 years is closer than 30!