Why is my desktop PC running slow?

This is the single most common cause of a slow PC, and most people have no idea it's happening. Every time you install software, there's a reasonable chance it has added...

This is the single most common cause of a slow PC, and most people have no idea it's happening. Every time you install software, there's a reasonable chance it has added...

A virus doesn’t usually announce itself. It just quietly makes things worse – your computer gets sluggish, something pops up that shouldn’t, or a program starts behaving strangely. By the time most people suspect something’s wrong, the infection has been…

The steps below focus on the first two - where the PC itself isn't coming to life. If you're getting power and fans but the screen is blank, the issue is more likely the monitor, the display cable, or a graphics card problem.

Open Task Manager (Ctrl + Alt + Delete), click the Startup tab, and have a look at what's in there. Anything you don't recognise or use regularly can be disabled...