My computer keeps freezing after a few minutes of using it. Any ideas of what could be wrong?

SilverIce: My computer keeps freezing after a few minutes of using it. Any ideas of what could be wrong?
I have an ASUS notebook that in the last couple of days keeps completely freezing, usually when I am browsing the web.
It started with Firefox, then I switched to Internet Explorer, then Safari. All of them keep completely freezing, regardless of what site I am on.
I have good virus protections and I run scans every few days.
Any ideas of what to do? I have to keep manually shutting it down, which isn’t good for the system.

Reply::

🙂 john
to start with,you are using too much memory,try to stop some of the programs you do not constantly
use from running in the background.
2nd you must defrag your system.
you should notice a big difference.

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