I finally put the courage installed SP2, I didn't expect to solve it. The notebook is OEM is the home version. Later, I upgraded it into Pro version, which is probably because of this reason - after all, it is also genuine ... 嘿! I found that SP2 is still very good, at least you can directly view the compressed package directly in Explorer, the firewall is not bad ... I don't know what is still Dongdong - too lazy to check, and I will experience it.