There are generally three reasons for the phenomenon that you cannot open web pages but can use QQ. First, when the DNS server is set incorrectly, it cannot interpret the domain name, so you can't open the web page. Second, it is caused by a virus (for example: the virus infects the IE browser or the CPU occupancy rate is too high). Third, system file loss causes IE to fail to start normally (such as system instability, conflicts between software and hardware).