AG CHROME TAB7

[Guest stanleyb01]

Hey guys I have a AG Chrome 7 inch tab and its got Android 4.2.2 on. I have been doing factory resets on this tab for about five times. My problem is that there are these annoying ads. Some ads installing itself. I think the whole operating system might be corrupted. I would like to install  a fresh new Android operating system on it. Can someone help me to get an operating system and how do I install it from there. My E-mail address is : [email protected]