Clean a Windows 7 PC that has internet connection but can not navigate.

HI I have a Windows 7 machine that has internet connection I can access it via teamviewer, and also recieve emails on OUtlook but I can not navigate. I have cleaned it with AVAST, ARGENTE UTILITIES, CCLEANER, MSESENTIALS, it seems to work again for a while but the problem cames again. I need someone with some solution for me, some one that could analyze what is the real problem which proccess or software is not letting me to navigate or analyzing network connections. There are more PCs in the office and this is the only one that have this problem. Thanks in advance