It's natural for a PC to slow down over time, but it doesn't have to stay that way. From running Disk Cleanup and tweaking the power plan to getting rid of unnecessary apps and files, here are a few ...

Q. When I defragment my C drive, the graph goes only to 10 percent before I get a message that says the drive's content changed. How can I correct this problem? Q. When defragmenting, drive C gets to ...