I am not a geek, by any stretch of the imagination, but I tried google chrome, and my computer slowed way down, and everything looked different than without it, so I removed it, and just kept my regular google and windows Explorer that I had before, and I did not lose anything when I removed it, just got rid of the chrome.
Before you go looking for the axe, I would check Craigslist for a computer guy that can come and fix it for you, if you don't have someone that you know to work on it.
My daughter is my "Guru-ette" and she can usually figure out what to do, and walk me through it while we are on the phone ( with me usually cringing , and being positive that the whole computer is going to just die on the operating table ), and then it will be fine again. So, if you have someone that you know, maybe just a call will be all it takes to get it right again.