|'Symantec Client protection doesn't work'|
That's not new news, Symantec/Norton is one of the worst AV's anymore ever since they paid extensively to have trials put on all the new PC's in the past making people thing they were the best....MONEY....ADVERTISING
Use the Norton removal tool from their website to remove it. If you don't use the tool, it will leave crap in the registry and NO OTHER anti-virus will work properly.
Then try Avast Free and do a bootscan and put all it finds into the chest. Any questionable items, google them, just in case they are false positives.
You should also use Malwarebytes, update it and run a quick scan and remove all it finds.
Then run Trojan Remover and Hitman Pro, do the same.
Some HELP in posting on Computing.net plus free progs and instructions Cheers