My search default in Chrome keeps changing?

[Don]

My search keeps changing to Yahoo, and yahoo is godawful, so please help me.

[Demiurge]

type about:plugins into the address bar and disable the plugin

[778]

You can try this↓
On Google Chrome, how to remove search pest
First go to start, control panel, Programs and features
and see if's there, If it is remove it. Then try this.
Note: First click on the 3 little bars, top right side.
click tools
click extensions
If it's listed in your extensions, click on the trash can,and delete it.

Next step
1. Click on the wrench, or 3 little bars icon (upper right corner). Choose Settings.
2. At On start up: Open a specific page or set of pages.
3. Click Set pages. if your home page is not there. Type it in.
4. Next under Search in the same window, click on Manage search engines. Find The search pest and delete it. (What ever the pest is)
(Note) If the X don't show, then it's probably because it's selected as the default search engine. Hover over Google and click default to Make Google your default search engine.
then you can delete all the others. There are also other pest, and you can rid them the same way.