Fantastic! Had to do a clean install after another, reputable manufacture's software had caused a completely unrecoverable crash; reputable hah, hah, hah!
I was a bit sceptical at first because I wasn't sure if it would try to go on line and cause some sort of hang up over registration. It didn't, and the whole thing was up and running in about 20 mins. It also recognises existing partitions so whatever you've got stored on D: is still there afterwards, as it only wipes out C: So why 4 star and not 5?
Well, this appears to be only a very basic version of Windows 7, lacking some of the features of later versions, such as Office Starter, which one finds on new machines pre-loaded with Win. 7. Perhaps there is another Service Pack or something which one can download but, since I am currently having some problems with wireless connection, I can't do that at the moment.
Having said that, it represents a very good, value for money, buy.