I recently uninstalled a third party antivirus software that I stupidly downloaded called PC Tools. Right after the program rebooted my computer, I could not browse the internet, even though I have a functioning network connection, as you can see right now (I am on my ancient backup laptop). My newer laptop shows that I am connected to a network, but when I try to open any browser, nothing loads. It claims that I am not connected at all. What to do?