Welcome to Justanswer.com, my name is Dustin.I'm sorry to hear about the issue you are having, I will do my best to help you resolve it.
Lets try a simple step first, which has no drawbacks and if we dont like the outcome, we can undo. This will solve issues like what you are experiencing about 75% of the time. So whether this works or not please reply so we can either close this question, or try further repairs.
Click start, all programs, accessories, system tools, system restore..Click, restore my computer to an earlier pont, then click next..We want to choose a restore point that was at least one day before the issues started..Carry out the restore. the computer will restart, then let me know if that fixed the issue or not..
I strive to provide great service, and greatly appreciate a 5 star rating clicked and submitted when you are satisfied.. I always answer follow up questions.Dustin S.Senior Technician and Network Switching Systems Operator / Maintainer.