Microsoft no longer supports Windows 8.1. If you're still running it on your PC, you're long overdue for an upgrade.

Now the bad news: If you’re planning to upgrade a PC running an older version of Windows, you’ll need to pay for a new Windows 8.1 license.

How to Install Windows 8.1 If you get a new PC or tablet, it will have Microsoft's new OS pre-installed. Here's how to get the OS on an older or custom-build machine.

When you first switch on a Windows 8.1 PC you won't notice many differences from Windows 8. The boot process is still quick, Live Tiles still greet you after you sign in.

If you or someone whose computer you reluctantly support is still running Windows 7 or 8.1, the easiest escape hatch short of buying new hardware is an upgrade to Windows 10.

If you're currently running Windows 7 and want to upgrade to Windows 8.1, the process is relatively easy using Microsoft's Upgrade Assistant utility. However, there are a few things you need to ...

Microsoft's latest operating system brings a handful of new features and improvements to the Windows platform. Here's how to get it.

Once you've had your new Windows computer for a while, like with previous versions, Windows becomes unstable or slows down, and you want that clean machine back. Here's how to use the PC Refresh ...

Q: How do I uninstall Windows 8.1 from my laptop? A: I think Windows 8.1 is a pretty good operating-system update. But it's also an operating-system update — meaning that it can get tripped up ...

Tech enthusiast gets Windows 8.1 to install on a system restricted by the ancient (1984) EGA graphics standard.

So in order to be able to run Windows 10 (or Windows 8/8.1), you need a processor that supports PAE, NX, and SSE2. Without this, your Windows 10 fun comes to an end.

Microsoft no longer supports Windows 8.1. If you're still running it on your PC, you're long overdue for an upgrade.