remarkable...
I've bought a new laptop in part because I was having similar issues with my windows 7 machine (i.e. wifi randomly dropping out). I've seen a lot of windows 7 user with the same problem.
The most annoying thing about it is that one can easily solve the acute problem by just disable-enable the wireless adapter or use the troubleshooter (which is doing the same thing btw), but it's impossible to find a systematic solution. I've tried it all what's been posted on fora; boot in safe mode and re-install drivers, change power saving settings, fix set the gateway,... in my case, nothing has worked and I gave up.
So, for as long as I could cope, I was disabling & enabling my wireless adapter every time it happened (could be several times per hour, could be fine for a full day, it's totally random it seems). I even switched back to nineties technology using ethernet when I could not afford loosing connection. Can you picture it?, a long grey cable in my living room with 2 young children playing around. :)
My old laptop getting old and tired of not finding a solution for this problem, I bought a new one, with windows 8. You can imagine the horror I felt earlier this week when I was experiencing the same wifi problem on the very first day I have this wonderful, powerful new machine...
I cannot understand at all this problem has not been solved in windows updates already. The first post of this thread is over 6 months old. By now Microsoft must know this is a serious issue experienced by A LOT of customers. I've searched but have not found ANY official communication from Microsoft on the issue. I'm completely baffled. What is going on? OK, I can imagine this is not easy to solve, but hey Microsoft, you're risking loosing a lot of customers here. The least you can do is acknowledge the problem and try to save your customer base!
I think you have been very very patient with this situation and have refrained from rants as long as humanly possible. :)
Lots of courage and do know I feel your pain, as do many more users, I'm sure! :)
FYI, I lost my internet connection 3 times when writing this post; luckily I've made it a habit of writing offline in word first. I've lost too many forum posts on this issue already... :)