Thank you for your suggestions, and I apologize for taking this long to respond.
re: disk defragmenter: "Analyze" said there was no need to defragment the volume.
Because I was also having problems with Microsoft Security Essentials, I thought perhaps that could be the culprit with using too many system resources. Supposedly I have enough processor speed to handle MSE. On Dec. 16, I contacted MSE support with the error codes which I was getting, and the problems I was experiencing. We have been troubleshooting ever since, and nothing has been resolved. I see that Geeks to Go recommends MSE as being easy on system resources, so I now think it may be the start-up items causing the problems, as you suggested. I must have programs running in the background which need to be disabled, or deleted.
re: CCleaner. I downloaded and ran. I have several programs listed, but I am unsure about what some of them are, or whether to "disable" or "delete." I thought I had been able to remove an old SpyBot Tea Timer, but is is showing on the start-up. I copied the results in "Notepad," so that you could advise which ones should be disabled and which deleted. I have attached the file.
Some are old programs which are no longer even supported.
Edited by Joyce L, 27 December 2010 - 05:30 PM.