If you’ve had your computer for more than a few years, it might not feel as responsive as it did the day you bought it. Perhaps it’s slow to boot up, or apps take longer to launch and seem sluggish to use. But you might not need to buy a brand-new PC. In fact, to fix this problem you might not even need to spend any money at all. First, try these steps to clean up your old computer, and it may feel brand-new once again.