We've all been there - you need to get some work done, but your PC is dragging, sluggishly completing tasks, occasionally freezing, unable to handle several open apps at once. In fact, if it were going any slower, it'd be going backwards. But there is hope. Unless your system is just too old to handle current applications, there's no reason that you can't give your trusty old computer an overnight performance boost. We gathered together a list of essential tips guaranteed to squeeze a little more speed out of your underperforming desktop or laptop. Ranging from the dead simple to more complex, below you'll find a number of easy fixes with an immediate payoff to longer projects that will increase speed if you apply a little elbow grease. Check 'em out now and thank us later, when you've finally rejoined the 21st century and have enough juice to fire off an email while browsing the Web.