More problems with my Samsung ATIV Smart PC...

I've had my Samsung ATIV Smart PC for almost a month. Well, actually I'm on my second one as the first was always crashing and it ended up dying with Blue Screen of Death after just one week of use. Unfortunatly this second one is not doing any better. After on week of use it forced me to make a Windows Refresh because Angry Birds Star Wars stopped working and there was nothing I could do to make it work again. Making a Windows Refresh is a pain in the a** because it forces me to install all my desktop apps again and organizing my Start Screen all over again and to lose all the game data of my Windows 8 games... all this just to make a single app start working again, but well, I payed for it, so I wanna have it working... I've had other problems like the tablet going mute and I have to restart it to make the sound work again. But the most annoying problema started 2 days ago: any wifi connection that I'm using always ends up disconnecting after no more than 10 minutes of use, sometimes a lot less than that. It's not a problema of my router, because this happens everywhere, with every router. Sometimes it reconnects automatically, sometimes I have to do it manually or it will not reconnect. This is so annoying!! What's wrong with it?