gilenes

I keep getting a "Blank Page" appearing on my Home Page (Yahoo) I get rid of it but it keeps appearing - How does one remove this pest for good? Operating system:Windows 8.1 (64 bit) System root: C:\WINDOWS Available physical memory: 3525 MB CPU: AMD E1-2500 APU with Radeon HD Graphics Drive Info: C: 450.13 GB G: 14.04 GB Internet Explorer: 11.0