How to stop autoplaying HTML5 videos

P. Petropoulos blocked Flash videos from playing automatically without his permission. Now he wants to block HTML5 videos, as well.

On New Year’s Day, I told you how to block videos that play automatically when you visit a Web page. In fact, if such a video is starting to play right about…now, you may want to revisit that article.

My previous instructions concentrated on Flash videos, however, and Flash isn’t the only technology designed to annoy you with unwanted videos. So now I’ll tell you how to block HTML5 videos in Chrome and Firefox.

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Is your PC overheating? Here's how to tell

Hamed Bouattour worries that his PC is overheating.

Electricity, by its nature, heats things up. And heat, by its nature, can damage electrical circuits. Everyone with a computer has to work within that paradox.

I’ve written about overheated PCs in the past, but that was in the context of PCs that overheat so badly they shut down. But heat can cause problems before the crucial stage. Too much heat can reduce the CPU’s efficiency and wear out components faster than necessary.

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Read old emails from Outlook Express, Windows Mail, and Thunderbird

A friend of Russ and Sheila Stevens needs to access his late father’s Outlook Express messages—tricky since Outlook Express is no longer available. My answer covers more than Outlook Express.

Keeping old emails is pretty easy as long as you keep the same email client. Once you move from one mail client to another, however, you may need special software to access older mail.

[Have a tech question? Ask PCWorld Contributing Editor Lincoln Spector. Send your query to]

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7 steps for archiving your files for posterity

Doug Schofield asked about “long-term storage for my most important data: My family tree, irreplaceable photos, interviews, and audio recordings.”

I have family photos that go back more than 100 years. But I can’t be sure that, a hundred years from now, my descendants will have my photos.

No one knows for how long your files will be accessible. Both file formats and physical media can go out of fashion. And the media itself may not be stable over the long haul. I can’t guarantee anything, but these steps will increase the odds that your descendants can know their ancestors.

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Five precautions for avoiding malware when you download and install software

Roger Mccullough downloaded three separate programs, and Panda Anti-virus Pro found malware in all of them.

Downloading a program—especially one from an obscure publisher without a positive reputation—is something of a leap of faith. It’s a bit like letting a total stranger into your home.

But if you follow these five steps, you should be okay.

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When the time comes, you'll be able to make Windows 10 look like Windows 7

Tom Corbett is considering moving to Windows 10 when the time comes, “but I do want the desktop to look like Windows 7.”

I’m pretty sure you’ll be able to do that, but I can’t say for sure. Windows 10 is still a work in progress, and the available Technical Preview keeps changing. So consider this an educated guess.

Let me start with the basic warning: Do not install Windows 10 on your main computer until the commercial version is released. For the time being, install it on a spare computer, a virtual machine, or not at all.

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You can securely wipe your files, hard drive or SSD with one of these free utilities

Stoqn Tochev asked about securely erasing sensitive files without destroying everything on his hard drive. I'll discuss SSDs, as well.

When you delete a file conventionally, it goes into the Recycle Bin, where it can be easily restored. When you empty the Recycle Bin, Windows makes the space where the file once resided available for other files. But the data from the file remains until another file writes over it.

Things have changed since I last covered this topic in 2013. SSDs have become more popular, and they work differently. Also, as Windows 8 has gotten older and more mature, I felt I should discuss a tool built into that operating system. Finally, I've replaced one free tool I used to recommend with another, easier offering.

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