This has been happending for a few weeks.
The computer runs fine except that every 30 seconds, the computer locks up for about 5 seconds and then continues to work.
Under Administrative tools, I clicked on the performance icon to bring up the program. I was monitoring the services loaded on my computer but found that none of the processes listed were causing the problem.
I can see on the graph that about every 30 seconds, the CPU
jumps to 100% utilization for about 5 seconds and then resumes.
I thought it was my wireless keyboard and mouse but replaced them with a wired keyboard and mouse. I also disabled virus and spyware apps and all others from my system tray.