Poor PC Performance? Why?

Keeping a computer running smoothly and quickly is a
never-ending job. It seems like no time after you take your
brand-new PC out of the box, your computer starts acting up and
performing more like the old PC you got rid of than the new one
it is supposed to be. While this is extremely frustrating, it
can be prevented if you know what is causing your PC's poor
performance and how to fix the problems behind it or avoid them
in the first place.

The nastiest things that corrupt your PC are the things you
can't see. Nasty bugs like viruses, adware and spyware can wreak
havoc with your system without you even being aware of it. At
their most lethal, viruses can completely destroy your PC's
operation, but normally they just work to interfere with the
daily operations of your computer. Adware and spyware, on the
other hand, stay running in the background of your PC and can
slow it down considerably.

Not just some viruses and it's friends, there are a lot of things that causes the PC goes to be slow, and slow...

Temporary Files
Temporary files created by our computer naturally. Temporary files stored for the purposes of the PC itself, but the temporary files also bring negative impact to the PC, the more that is saved on the disk, the disk is full, and will make a slow PC performance.
Temporary files obtained from several things, among others, is the installation of software. Some of the software always leave temporary files for some reason. Web browser, this also creates temporary files always or usually called the Internet cache is stored in the temporary folder that rarely opened.

Recycle Bin
Hygiene is the cause of health. This proverb was used in the PC world. Can never be clean if the waste is in the house. Our home will be very dirty and carry diseases that will interfere the health body. Also the PC, often throw all the garbage in the recycle bin, the PC users sometimes lazy to clean the recycle bin, but if the trash is full, the performance of a PC weakened.

For the other is, forced to shut down the PC, without a shutdown, loss of registry value, and so on. For more details, read http://www.web-articles.info/e/a/title/Causes-of-poor-PC- performance/.