Check for Viruses using Anti Virus programs ...
Computer viruses can play havoc on your pc if you are not protected.
A virus is an intrusive program that infects computer files by inserting in those files copies of its self.
The copies are usually executed when the file is loaded into memory, allowing them to infect still other system files, and so on. Viruses often have damaging effects on your pc. Some viruses can destroy your pc's hard disk while others take up memory space that could other wise be used by your programs. This can slow down your Pc speed. They might even delete valuable system files thus making your programs useless.
To prevent this it is vital to have a good proper Anti virus program on your pc. There are many free downloadable anti virus programs available on the internet.
Once you have installed it be sure to scan for viruses because in most cases when your pc slows down, gives sluggish performance, start up problems or freezes for no reason it is most likely to be a virus problem. Also be sure to update your Anti virus program regularly.
If this doesn't work try scanning for Spyware Adware and other Malware
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