Google Chrome can occasionally plague some Windows users with perplexing issues. Google frequently updates the browser to fix known issues and bugs. In the case of a potential computer glitch or virus, the steps necessary to fix a problem aren't typically too arduous.
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Slow Flash Video
For some users, video using Adobe Flash Player is slow, stutters or just won't play at all. Google has acknowledged this as a known issue and is working on a fix for an upcoming update to Chrome. In the meantime, it's best to avoid videos encoded with Flash if you're experiencing this problem. Since YouTube widely uses Flash Player, try switching over to HTML5 on YouTube's TestTube page. Click Sign Up to begin. You can also try typing chrome://plugins in your address bar and checking Always Allow underneath the Flash listing. (Ref 1, 2)
Conflicts with Other Software
If you have other software installed on your computer that is out of date, it may inhibit Google Chrome's ability to function properly. To determine if this is the case, type chrome://conflicts in the address bar. If you see software here that you have on your computer, check that you have the latest version of each program. Try updating the software, which you can typically accomplish from within the app's settings or on the developer's website. (Ref 1)
Relaunch or Reinstall Google Chrome
Sometimes Google Chrome's inability to work the way it should or even load at all is fixable by a quick relaunch or reinstallation. If Google Chrome won't launch or if web pages have trouble loading, try closing your browser by clicking the red X button at the top right of the window. Wait a couple of seconds, then reopen Chrome. Also try loading pages using incognito mode by clicking New Incognito Window in Chrome's menu. If the browser works normally in this mode, your browser extensions might be causing a problem. Type chrome://extensions in the address bar to manage or delete them. (Ref 3)
In other cases, might be necessary.
Malware and Adware
Google Chrome problems could be the result of malware or adware infecting your computer. If you notice an unusually large influx of ads or pop-ups, adware may have infected your computer. Run an adware scan using free programs like Bitdefender or Ad-Aware to detect and remove adware. Malware is often the cause of sluggishness on computers and particularly in browsers like Chrome. Other free tools like Panda Free Antivirus and AVG Free can determine if your computer is infected by running a virus scan and removing any harmful findings. If your PC did have malicious software installed, check Google Chrome after its removal for performance improvements. (Ref 3)