Problem:
1)The default homepage of IE is set to some fixed url.Even if you change url of homepage or set it to blank, a unwanted website url will automatically replace it.
2) Homepage cannot be changed to website you want.
Cause:
1) Your system is infected by some virus.
2) Unwanted/ Malicious code may have been run on the computer.
3) Any installed third-party software has changed IE home page setting.
4) Administrator of system has configured home page setting by using the Microsoft Internet Explorer Administration Kit (IEAK), or by using Group Policy, by using System Policy, or by using manual registry settings such as a logon script.
Solution1:
1) Login as administrator.
2) Open IE-->> Tools -->> Internet Options -->> Advanced tab -->> Reset .
3) click Reset
4) IE will restore all default settings-->>click Close -->> click OK -->>OK .
5) Restart IE. Done!!!