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Chris Hoffman

Chris Hoffman is a technology writer and all-around computer geek. He's as at home using the Linux terminal as he is digging into the Windows registry. Connect with him on Google+.

Upgrade to Windows 8 or 10 and you may be surprised to find that you can no longer play video DVDs or Blu-ray. Unlike previous versions of Windows, Windows 8 and 10 don’t include built-in support for playing DVDs.

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If you use Google Chrome, there’s a good chance you’ve seen files with the “.crdownload” extension in your Downloads directory. Google Chrome creates one each time you begin downloading a file.

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Mac OS X has a desktop app store, unlike Windows. Get a new Mac and you may be excited to open the Mac App Store and install all your favorite software — but you won’t find all your favorite apps in the store.

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Local media servers have gone out of style. Microsoft no longer makes Windows Home Server and is phasing out Windows Media Center. But there are still great solutions if you want to run a home media server and stream to all your devices.

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The Internet is supposed to be a global network that links the entire world, but many websites are confined to specific countries. Unsurprisingly, piracy is higher in countries where content isn’t legally available.

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Wired connections, which use Ethernet cables, are generally faster and have lower latency than Wi-Fi connections. But, just as modern Wi-Fi hardware has advanced, modern Ethernet cables are capable of communicating at faster speeds.

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You’ll need a unique product key to reinstall Windows on your PC. This is more confusing than it sounds — you may not be able to re-use the key your computer’s manufacturer used.

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Microsoft operates over 100 retail stores across the USA and Canada. They’re not just places to shop — Microsoft Stores will perform basic Windows PC maintenance for you, for free. It doesn’t matter where you bought the PC, as long as it runs Windows.

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Windows makes it possible to change the welcome screen that appears when you start your computer without any third-party software, but this setting is well hidden in Windows 7 — although much easier in Windows 8 or 10. You can set any image you like as your background.

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Old devices using 802.11b Wi-Fi are a problem. They slow down modern Wi-Fi networks just by operating on the same channel nearby. Even your neighbors’ Wireless B devices may be slowing down your Wi-Fi.

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Crouton — made by a Google employee — is the ideal solution for running Linux on your Chromebook. If you’re a Crouton user, there are some extra commands you’ll want to know.

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Lenovo’s been shipping Superfish on their PCs for months. This is a security disaster, and it shows how little PC manufacturers actually care about your PC’s security. There’s only one way to ensure your new PC is actually safe to use.

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Apple’s Photos app saw some changes in iOS 8, and more changes are coming when iCloud Photo Library launches soon. Did you know that your photos app keeps copies of photos you’ve deleted?

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Are you using Apple’s Mail app on your Mac? Then you’re losing gigabytes of space you could be putting to better use! The mail app wants to cache every single email and attachment you’ve ever received offline.

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Want to make your tablet or smartphone’s battery last longer? Prevent it from automatically checking for new emails and other data in the background. “Fetch” will drain your battery the fastest.

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It’s easier than ever to find a PC game’s FPS. Steam now offers a built-in FPS display, and so does NVIDIA via its GeForce Experience software. Fraps is still around to display this for other games — and many games have this built-in, too.

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It’s impossible to completely protect any device from an attacker with physical access. But, unless you set up your Mac properly, it just takes a reboot and a few seconds to bypass your password — or wipe your hard drive.

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Your iPhone’s keyboard offers some hidden tricks that can help you type faster. iPads offer some hidden tricks, too — did you know you can split your iPad’s keyboard and move it around the screen?

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Not all of us have switched to smartphone photography. Whether you use a DSLR or just a point-and-shoot camera, there are ways to automatically upload and sync photos like you would with a smartphone.

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For all the old jokes about one-button mice and simplicity, Macs have some power-user features Windows just doesn’t offer. Automator is one of them, offering a simple way to automate repetitive tasks without any third-party software.

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Smartphones and computers are notification-generaitng machines. Every app wants to constantly ping you, interrupting your life and pulling you out of that “flow state” while working.

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Wi-Fi networks interfere with each other. Older Wi-Fi standards are even worse about this, so your old Wi-Fi hardware isn’t just hurting your network — it’s interfering with your neighbors, too.

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Chrome’s new user account switcher allows you to create multiple “profiles,” which you can use to log into multiple accounts at once on websites, use different groups of add-ons, and more. You can do something similar with Firefox’s Profile Manager.

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Google wants to get rid of browser plug-ins, but they’re bundling quite a few with Chrome itself. On a clean install, you’ll see at least five different browser plug-ins, from the Widevine Content Decryption Module to Native Client.

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Wouldn’t it be great to have a smart TV? Well, not really. Smart TVs have a lot of problems. If you do have a smart TV, you’d be better off combining it with a cheap set-top box rather than actually using its smart features.

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