Computer sometimes freezes for an unknown reason.

<p>The computer freezes for programs, many processes running in the background react and install third party software on your computer. If you do not take steps to avoid this problem, the computer will probably freeze continues and possible problems with hardware and software that may result in loss of important documents and files. Start the computer from sleep can also lead to paralysis of the computer as different programs simultaneously loaded in the background. <br /> <p><br /> <p>1. Turn the computer off and restart it from sleep. Note that your computer crashes at startup. <br /> <p><br /> <p>2. Close all third party software (software not written by Microsoft) before the computer is idle. Programs running in the background are often the reason why a computer freezes during startup. <br /> <p><br /> <p>3. Take your anti-virus program on the hard drive of your computer from viruses and spyware in the treatment of the computer and the record so he could slow down and freeze for scanning. Will remove all possible threats to your anti-virus program. <br /> <p><br /> <p>4. Press' Ctrl + Alt + Del "to open Task Manager on your computer. Close all programs that are shown as "not responding ". For unknown processes running in the background and check the registry of unnecessary memory. <br />