Add Yahoo as a preferred source to see more of our stories on Google. gerenme / iStock / Getty Images Plus When your computer slows to a crawl and struggles with even basic tasks, like switching ...

Power supply issues are the main cause of this problem. If your computer or printer is not directly connected to the main power source, say they are connected through a UPS, the UPS might be faulty.

Does your Windows PC feel sluggish? It might be due for an upgrade, or it could be due to how you use it. It doesn't matter if you've got a budget-friendly machine or a high-performance build — if you ...