One of the things that can cause these issues is over heating, and is one of the simplest to fix. I will suggest that you open your case to look for dust accumulated, especially around the heat sink and fan mounted on the CPU. If there is you can purchase a can of inert air at most stores like Staple, or even in some hardware stores. Use this to clean out the case and any heat sinks. If you place a pencil inside of the fan it will stop it form spinning while you blow it out. Before you do this though, please read the warning below.Caution:
There are electronics inside the case that are very susceptible to electrostatic discharges. To protect your computer, touch the metal of the case to discharge yourself of any charges your body may have stored before touching any of the components inside. As a safety precaution you should unplug the computer to avoid electrical shock.
Also look in the Event Viewer
and see what errors are showing up at the time that this is happening. Each error will have its own date and time shown.Start> right click on My Computer> Manage> Event Viewer
On the right side of the page you will see the options Applications, Security, and Systems, double click on Systems. There are eight columns on this page, the three that you will want are Type, Date, Time, and Event.
The errors will appear in the Type column, they are red dots with a white X inside of them.
Warnings will appear as a yellow trinangle with an exclamation mark inside.
When you see an error, double click on it and see what the description is.
Please post the error code/s found in the Event column and the descriptions back in this topic.
Edited by dc3, 05 July 2008 - 11:50 AM.