Hey there.
So, I've been following VNs and the community for almost 6 years now. During my initial years as a VN reader, I had a laptop with windows 7 in it, and I never ever had any problem regarding Japanese VNs. Just with a quick search on google I realised I need to set my locale to Japanese, and I did. But you know, some visual novels out there need an extra setting: Date and time format I think it's called? Well, when I came across those VNs, I again did a quick google search and found the solution to my problem.
But it seems that no one has discussed my current problem online (as far as I have searched), so I thought about doing it myself.
The laptop I talked about earlier with windows 7 broke a year and a half ago, so I got a brand new one with windows 10 in it. As I said in the title, my problem most likely has something to do with this new windows 10. The problem is that changing the format doesn't seem to have the effect that it should. Changing the format changes nothing. Some VNs are not running at all because of it, and the Japanese in the error boxes or the dialogue boxes or whatever they are called doesn't display: it's gibberish. Just to make sure, I changed not only the system locale and the format to Japanese, but all the "things" about my PC that I could: windows display language, date, clock, region, everything I could find. Of course, I have no knowledge of CS, so it was just a wild, random action on my part. It did no good.
This one VN that's having problem in my pc runs perfectly fine in my brother's 8 years old laptop (I just checked) with windows 7 in it. All I had to do was change the locale and the format to Japanese.
I am at a loss on what to do, so help me if you can; I'd be extremely grateful. Thanks in advance. And thanks for reading my awkwardly written post :).