I noticed that many computer are slow due to four major problem Malware,Unused Applications,Poor Maintenance,Hidden Applications Start-up but users don't keep eye on them.


Computers are infected through internet connections,old files(App,Music,Image,Video,Zip etc).For that reason search or ask three good antivirus to download (every antivirus app have is own major solution),quit all untrusted website you know and delete or transfer old files(App,Music,Image,Video,Zip etc.)with Windows Disk Cleanup.

After killing Malware in your computer you are one step faster than before. Do you know there alot of Apps running hiddenly without your consent so,download Spybot Search and Destroy to makes you ON/OFF all hidden apps running.By now i think your problem is solved.
Source:Asifa Wale's Blog