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Some people think that task killers are important on Android. By closing apps running in the background, you’ll get improved performance and battery life – that’s the idea, anyway. In reality, task killers can reduce your performance and battery life.

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File extensions can be faked – that file with an .mp3 extension may actually be an executable program. Hackers can fake file extensions by abusing a special Unicode character, forcing text to be displayed in reverse order.

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Thousands of hours per year of fan-driven air movement combined with electrostatic charges make computers veritable dust magnets. Is all that dust simply a nuisance or is it actually harmful?

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Whether you saw a message saying a virus was detected or your computer seems slow and unreliable, this guide will walk you through the process of dealing with your infection and removing the malware.

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The “Do Not Track” option is enabled by default in Windows 8’s Internet Explorer 10 and available in Firefox, Safari, and Opera. Google is even adding it to Chrome. There’s just one problem: it doesn’t actually prevent tracking.

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Windows uses a page file to store data that can’t be held by your computer’s random-access memory when it fills up. While you can tweak the page file settings, Windows can manage the page file fine on its own.

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Like all sufficiently advanced technologies, Wi-Fi can feel like magic. But Wi-Fi isn’t magic – it’s radio waves. A variety of things can interfere with these radio waves, making your wireless connection weaker and more unreliable.

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Internet connection problems can be frustrating. Rather than mashing F5 and desperately trying to reload your favorite website when you experience a problem, here are some ways you can troubleshoot the problem and identify the cause.

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Hard drives are getting larger and larger, but somehow they always seem to fill up. This is even more true if you’re using a solid-state drive (SSD), which offers much less hard drive space than traditional mechanical hard drives.

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System Restore is a Windows feature that can help fix some crashes and other computer problems. To know when to use it, you’ll have to understand just how System Restore works.

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Antivirus programs are powerful pieces of software that are essential on Windows computers. If you’ve ever wondered how antivirus programs detect viruses, what they’re doing on your computer, and whether you need to perform regular system scans yourself, read on.

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When you a delete a file, it isn’t really erased – it continues existing on your hard drive, even after you empty it from the Recycle Bin. This allows you (and other people) to recover files you’ve deleted.

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Glance at your keyboard and chances are you’ll see a few keys you never use near the top-right corner – Sys Rq, Scroll Lock, and Pause / Break. Have you ever wondered what those keys are for?

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Linux’s terminal commands are powerful, and Linux won’t ask you for confirmation if you run a command that won’t break your system. It’s not uncommon to see trolls online recommending new Linux users run these commands as a joke.

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Google can do more than display lists of websites – Google will give you quick answers to many special searches. While Google isn’t quite as advanced as Wolfram Alpha, it has quite a few tricks up its sleeve.

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Do you want to save time when installing Windows 7? You can create a customized installation disc and have it perform an installation without asking you questions, integrate updates and drivers, tweak Windows, and remove Windows components.

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Some of the most powerful Windows features are only available in Professional or Enterprise editions of Windows. However, you don’t have to upgrade to Windows Professional to use these powerful features – use these free alternatives instead.

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Connect a USB stick to a Windows computer – even on Windows 8 – and Windows will ask if you want to speed up your system using ReadyBoost. But what exactly is ReadyBoost, and will it actually speed up your computer?

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The Windows Event Viewer shows a log of application and system messages – errors, information messages, and warnings. Scammers have used the Event Viewer to deceive people – event a properly functioning system will have error messages here.

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While you can use the Windows Task Scheduler to schedule your own automatic tasks, Windows also uses it behind the scenes to perform many system tasks – defragmenting your hard disks when you’re not using your computer, for example.

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If you’ve ever purchased a computer with a hard disk capacity of 500 GB and opened Windows Explorer only to find that its capacity looked more like 440 GB, you may be wondering where all those gigabytes went.

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As usual, there’s yet another security hole in the Java Runtime Environment, and if you don’t disable your Java plugin, you’re at risk for being infected with malware. Here’s how to do it.

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The C: drive is the default installation location for Windows, if you have a CD/DVD drive on your machine it’s likely the D: drive, and any additional drives fall in line after that. What about the A: and B: drives?

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Did you know you could be connected to facebook.com – and see facebook.com in your web browser’s address bar – while not actually being connected to Facebook’s real website? To understand why, you’ll need to know a bit about DNS.

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Do you use a webmail service you’re unhappy with because it’s where all your email is? There’s good news – you can easily switch, without losing your old email and contacts and without missing email sent to your old address.

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