我有这个问题, 不过解决了.
我上次也是, 主页被换了. the option is also disabled and I cannot change the Homepage URL. You can download the IE Security software, this one can change the registry setting for IE, you can enable the setting again.
I also got a problem that when the pc starts, that web page is launched automatically. this one can also be changed by Registry Crawler. delete the start up setting. of course, also can be done by manually change the regisry setting, but using those software is very easy la. haha.
those website sucks!!