Firing up a brand-new PC is a magic moment that can never be recaptured. The flawless performance, the lightning-fast speeds, the uncluttered desktop — they’re a thing of beauty. In time, though, just about all PC users will have to cope with their share of problems, from sluggish download speeds to out-and-out system failures. For anyone with the time and the inclination to do their homework, there are a number of ways to keep panicked calls to a high-priced technician to a minimum. Here are some of the more common PC problems that might come your way.