While notebook makers continue to churn out new models every month, consumers are holding on to their aging notebooks for longer than ever. People keep their laptops for an average of four years and four months; a month longer than they did a year ago, according to a recent report in The New York Times. The problem is that laptops don’t age gracefully. At all. After a while, your machine can slow to a crawl, run out of power faster than you can say “where’s my charger?” and collect crumbs like a sofa. To help reverse the aging process, we rounded up PC owners’ most common complaints, along with advice for making your notebook perform like it’s fresh from the box—or better.