For our Chinese guys, using QQ is a daily action. However, since I began to work at SA I have met a lot of Blue Screens on Windows XP. And TSW met them even on Windows Vista.
In fact, QQ brings in the problem. When you use a USB keyboard and QQ, please read this article carefully.
http://support1.ap.dell.com/cn/zh/forum/thread.asp?fid=3&tid=82231&hls=&page=1