I was using performance optimizer and driver updater to improve my device's performance, i used driver updater for the first time, it said it can enhance my gaming performance, when i did the process, it requires to restart, i had no problem with that, but soon as after my pc is turned on once again, i had two problems, first was that i had no sound and that it says "No Audio Output Device is Installed" which didn't appear before i used the driver updater, i tried using troubleshoot but it couldn't identify the problem, nor was it the sound, video or game controller tab was found in my device manager! my second problem was that before i used ccleaner to do anything, i was able to play games with some lag but could play properly, after the driver update, it was so laggy that it keeps having an error every time i play, it became unplayable now! please help me!