For the past few months I've been having a problem where everything on my computer will freeze for 2-15 seconds, and then resume. Everything on the screen stops for the duration--no cursor movement, no video--and the sound repeats and then stops. After the freeze, everything resumes. Text that I have typed during the freeze is input, and mouse movement is translated into cursor movement. This freezing never ends in a shutdown--everything always resumes.
A period of frequent (meaning a few times a minute) freezing will start at any random time, but it is made worse whenever I listen to music, play any game with good graphics, or watch an online video (like on YouTube). Video files on my computer do not exacerbate the problem, however.
I originally thought that the freezing might be due to a bad sound card because of distorted audio, so I got a new one. Audio is now no longer distorted, and the freezing was reduced for a time, but now it is worse than it ever was. This problem has persisted across two installations of Windows XP and one installation of Windows Vista.
I realize it would be difficult to solve my problem over the Internet (though that would be nice) so I'm looking for a direction to start troubleshooting. Any help would be appreciated.
System core stats:
CPU: Intel Pentium 4 2.8 GHz (2 years old)
RAM: 1 GB (3-4 years old)
MB: Intel Desktop Board D875PBZ (3-4 years old)
GPU: nVidia GeForce 6800 Extreme Edition (frequently heats up in excess of 40 degrees fahrenheit; 1 year old)
Sound Card: Sound Blaster X-Fi Xtreme Music (new)
Current OS: Windows XP




