Windows won’t allow you to modify files that open programs have locked. if you try to delete a file and see a message that it’s open in another program, you’ll have to unlock the file (or close the program).

The SmartScreen filter built into Windows automatically scans applications, files, downloads, and websites, blocking known-dangerous content and warning you before you run unknown applications. You can disable it, if you like.

Whether it is just a matter of curiosity or a genuine need to know before adjusting the size of the file on your own computer, just how large can a Windows page file actually be? Today’s SuperUser Q&A post has the answer to a curious reader’s question.

Ever wish you could run macOS and Windows software, side by side, arranging windows from each operating system however you like? Thanks to a feature in Parallels called Coherence Mode, which you can use if you’ve set up Parallels to run Windows inside macOS, it’s only a click away.

Passwords can be reset or bypassed on every operating system, so even if you’ve forgotten yours, there may be a way in. This also means that evildoers can likely get into your system if they have access to it—and it’s way easier than you think.

New computers use UEFI firmware instead of the traditional BIOS. Both are low-level software that starts when you boot your PC before booting your operating system, but UEFI is a more modern solution, supporting larger hard drives, faster boot times, more security features, and—conveniently—graphics and mouse cursors.

The classic desktop versions of Solitaire and Minesweeper are gone in Windows 8 and 10. Instead, you’ll find shiny new versions with advertisements, Xbox integration, and optional subscription fees. But you can still play Solitaire and Minesweeper without ads, and without paying a cent.

Sometimes, Mac users need to run Windows software. Maybe there’s a program you need for work that doesn’t offer a Mac version, or maybe you occasionally need to test websites in Internet Explorer. Whatever you need Windows for, Parallels is the best tool for the job.

For decades, people with vision problems have adjusted their system resolution to make things like text and interface elements bigger. This is a terrible idea, because it distorts basically everything on your screen. If your Mac offers a Retina display, the System Preferences offers a better way.

Many people swear by multiple monitors, whether they’re computer geeks or just people who need to be productive. Why use just one monitor when you can use two or more and see more at once?

Windows 10 includes OneDrive, but if you’d rather not see it, there are several ways to disable OneDrive and remove it from File Explorer on Windows 10.

You’re likely reading this because you noticed a gigantic hiberfil.sys file sitting on your system drive and you’re wondering if you can get rid of it to free up some space. Here’s what that file is and how you can delete it if you want to.

If you are looking at your computer’s partitions in Disk Management for the first time, then you will definitely notice that one of them has been “marked” with hash marks. What does it mean? Today’s SuperUser Q&A post has the answer to a curious reader’s question.

High pixel density displays are now common on new Windows PCs, just as they are on smartphones, tablets, and Macs. But be careful what you wish for—many desktop apps still have problems on high-DPI displays.

So you’ve just unpacked that spiffy new monitor, and it sits fresh and new on your desk putting your other little displays to shame. Now you have to give it some sartorial splendor: a kick-ass wallpaper from the online repository of your choice. But now comes the conundrum—what if you want to use different images on different screens?

You can easily set any image you like as your login screen background on Windows 10. This was complicated in the initial release of Windows 10, but Microsoft made it simple with the Anniversary Update.

Windows 10 lets you use handwriting input in any application, and many applications include full support for inking. Windows automatically attempts to learn your unique handwriting style when you write with a pen, but you can also train it manually to improve the system’s handwriting recognition.

Many apps include a component that starts along with Windows. These startup apps can be useful, but they can also slow boot time and use up system resources. Here’s how to get them under control.

Modern operating systems offer weather information out-of-the-box. There’s Windows 10’s weather app, and the Notification Center on macOS. But Ubuntu doesn’t come with anything like this.

Windows doesn’t do the best job of scaling on high-resolution monitors. And if you have multiple monitors with different pixel densities, things can get even more confusing. Thankfully, Windows 10 has settings that can help.

Windows 10 is designed for PCs with unlimited Internet connections, and it normally uses as much of your download and upload bandwidth as it wants without asking. Setting a connection as metered puts you back in control, and it’s essential on some types of connections.

Windows 10’s Game DVR feature can slow your gaming performance by recording video in the background. If you don’t care about recording your gameplay, disable Game DVR for performance reasons.

There are few things as frustrating as turning your computer on and having it take forever to fully load up, so how do you find out which programs are slowing everything down? With that goal in mind, today’s SuperUser Q&A post has an easy solution for a curious reader’s problem.

All web browsers remember a list of the web pages you’ve visited. You can delete this list at any time, clearing your browsing history and erasing the tracks stored on your computer, smartphone, or tablet. Each browser has its own separate history, so you’ll need to clear the history in multiple places if you’ve used more than one browser.

Want to set a web page aside and come back to it in the future? If you use Microsoft Edge in Windows 10’s Creators Update, you don’t have to leave the tab open or bookmark it and remember to come back. You can tell Cortana to remind you about the address in the future and forget about it.