I suddenly found everytime when open any page of the website. browser will always connect to this site www.50bang.com?$ i. _0 a5 V* p# @3 Q4 E, z+ L
Why?
hijack by software. Try Tools-> Internet options, see what is in home page at general tab.click on use default or blank and it shouldn't go to that page anymore. I it still does, you have been infected by malware. Use spybot to scan.