I'm going to be blunt about PC and MAC!
The only difference between PC and MAC is the software...PERIOD! If you have a PC and you are having multiple problems, you need to take a look at the source of the problem: The USER! MAC users rave about how well a Mac computer runs, but never consider what software is on a MAC vs PC. First and foremost, the anti-virus software found of most if not all PC slows the performance considerably. It is a resource hog. Get rid of it! That will improve your PC performance by 50%. Closing any background software that you don't use freguently will help as well. I've own a DELL Laptop since 2005. Unistall all that unnecessary software and anti-virus junk and never had a problem! Own a Desktop since 2000 and no problem. The problem people have with computers can be contributed directly to the Users themselves and what their installing on their computer!
My recommendation...download:
Cleanup -
www.stevengould.org - Download and Installation
keeps your computer clean of unnecessary junk.
Spybot -
The home of Spybot-S&D!
protects against spyware & malware
I can name more, but those are the best and most importantly...FREE! And it won't slow computer performance. Most importantly, don't download anything you don't know what it is and most importantly don't plan to use.