Your computer need regular maintenance. You should update your software,hardware devices and do periodically scans for spywares.
-> First keep your softwares updated
When you get an update notice, download the update immediately and install it.
Now it’s time to start moving into longer term maintenance tasks.I recommend to do this once a week
->Back up your files. Backing up your files simply means creating a safe copy of your computer files that you can use when the original file are lost.
->Scan your files with up to date antivirus software. Use your antivirus scan tool regularly to search for potential computer viruses and worms. Also, check your antivirus program’s user manual to see if you can schedule an automatic scan of your computer.
One of the best ways to help protect your computer is to perform maintenance regularly.
Thanks to http://thewebit.com/