Patrick Marshall answers your personal-technology questions each week.

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Q: For over a year, I keep getting an error message when I go to Xfinity’s website: “Xfinity not responding due to long running script.” Do you have any suggestions?

Lance Towle, Kirkland

A:There are a whole passel of potential causes of script errors, and I’ll give a rundown on the major ones in a moment. But first, you’ll want to determine whether you’re getting the script errors on only one site or on many. Also, try a different browser with the Xfinity site and see if you still get the error. We’ll get to why in a moment.

First, if the only site that reports that error is Xfinity’s, contact the webmaster and report the error. And if the problem doesn’t occur with another browser, consider using that other browser.

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I actually use three browsers because each of them have glitches with some websites. For example, Mozilla Firefox doesn’t allow me to highlight text for copying in The New York Times website, while Microsoft Edge works just fine. Some browsers will play embedded videos on a site, while others won’t.

In the meantime, there are several things to check on with your browser configuration. After each change, check to see if the error message no longer appears. Since you didn’t mention which browser you’re using, I can’t give you the specific instructions, but you’ll want to turn off tracking protection — which tries to block websites from following you as you move from one site to another. Next, make sure your browser isn’t set to debug scripts. You should find this option in the advanced settings section of your browser options.

Next, some websites run scripts that require ActiveX, Active Scripting or Java. If those features are blocked in your browser, you’ll get an error when the script runs.

Next, remove all temporary internet files and delete the browsing history from the browser.

Next, make sure your anti-virus program isn’t configured to scan temporary internet files.

Finally, try disabling Windows hardware acceleration. The exact place to do so varies with different versions of Windows, but you’ll find it in the Display Settings.

Q: I have a Dell PC and upgraded to Windows 10 Pro earlier this year.

Ever since I did the upgrade to Windows 10, I have noticed that whenever I log in, the hard disk is maxed out at 100 percent for nearly an hour before it settles down back to normal usage. The hard disk did not do this behavior when I was running Windows 7 Pro.

How do I stop the hard disk from thrashing at 100 percent whenever I log in?

Fred Farris

A: Microsoft offers two things to try.

First, run the Hardware and Devices troubleshooter. To do so, go the Control Panel and launch the Troubleshooting utility. When it loads, click on “Hardware and Sound.” Then select “Hardware and Devices” and click on “Next.”

If that doesn’t solve the problem, try booting your computer in safe mode. You’ll find instructions here: http://windows.microsoft.com/en-in/windows-10/start-your-pc-in-safe-mode.

Q: My Windows 10 logon PIN disappeared. I still had my regular logon but had forgotten the password. I took my PC to the Geek Squad at Best Buy and for $40 they were able to reset my password, but my PIN logon would not save. Any thoughts on getting this feature back?

Tom Browning, Whidbey Island

A: Resetting the PIN is actually pretty easy. Go to the Start menu and launch Settings. Next, click on Accounts, then Sign In Options. Scroll down to the PIN section and click on “I forgot my PIN.” That will launch an applet that will prompt you for your computer’s password and then a setting of a new PIN.