I moved this to Malware Discussion, Home User Assistance as a better spot for it.
Run Malwarebytes Free to see if it detects anything. See the last link below and note that it can be downloaded, updated and run all in "Safe Mode With Networking".
Note also to keep it free of charge do NOT accept the free trial nor activate it, if asked to.
Also you may want to follow the Hijackthis steps outlined nearer the end of that post.
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