Personally I only use Linux. Works perfectly... always.
For some of my work, I have one with XP, obviously being M$ and not interested in service, it refuses to connect online, no forum nor customer service has yet been able to resolve it. 18 months on, and several days worth of combined hours wasted, I no longer even try.
Someone I live with has Windows 7 in Portuguese. REALLY slow and bugged to the max' as only Windows can be. Quite literally, open 'Windows' into your personal life.
One of the wallets I opened in XP (offline) and posted the wallet address was Colossuscoin.
If I am honest, over the years, I have already smashed to pieces various computers running Windows and would dearly love to continue using the XP one for the odd bits of work that still require the inferior software, tailor-made for idiots. It actually works waaaay better than any M$ system since and as long as it is left offline, then hey, all good..... until, the wallets change address with each pc.
Gonna give it a go with the info from the previous link and we'll see.
Thanks for the input...