PC getting slow - does my Chkdsk scan results tell you anything?

Go to the Services tab on your System Configuration window. Check the box which says "Hide all Microsoft Services". Now select all and disable. Click Apply and then reboot the computer. See if the problem is solved.

If the above solves the problem, then one of your non-Microsoft services was slowing everything down. Go back into System Configuration / Services tab, and re-enable the non-Microsoft services, one at a time, rebooting after each re-enable. When the system slows back down, you will know which one was causing the problem. Make sure you disable that one, and keep it disabled; and make note of the name of that service. Continue re-enabling one service at a time, rebooting each time, to see if there are any other problematic services.

If this didn't solve the problem, then you don't have any bad services. Be sure to re-enable all of the services that you disabled.

If you have a clogged heat sink and temperatures rises above 90ºC, the MB and the CPU itself can low the clock to prevent frying the CPU. But don't think it's your case.
It can be that you have a lot of programs running in the background and your system gets to low free memory.
With 4G Win 7 32 would run better than Win 7 64.

I thought it might be an over heating issue because I never notice one of my fans kicking on. I have two fans, one in the back and one on the side and I never notice the one on the side kick on. However, so far the hotest I've see it get is 62 degrees C. For my particular CPU, 45 - 55 degrees C is normal. So I don't think 62 is that big of deal. I will continue to keep an I on the temp though.

Yesterday and so far today I have not had any problems what-so-ever. The only thing I've been doing differently, is that I switched from using Firefox to Chrome. I got a error message at one point while using Firefox which said Keyfox maybe slowing down Firefox. Keyfox is a firefox add on which works with Keypass. They save my passwords and log me in to different websites. I've never had problems with them before, but I'm wondering if something there might be causing my problems. There is two instances of Keypass in start up. I don't know if there is suppose to be two of them or just one of them there. I have also seen Firefox become unresponsive when I had the add on disabled and keypass closed, so maybe the problem is with Firefox. I don't know.

If that turns out to not be the problem and my computers starts freezing up again, I will try what Mrjimphelps said to do.

I do have Win 7, 64, but I was told that's ok with a dual core processor. I've had it set up that way for a long time now with no problems. And some times I do have a lot open - several browser tabs, and other programs. But, it was never a problem before. And I have tried closing everything except one or two tabs while the PC is freezing up, but even that didn't help.

I guess I'll give it a few more days and see what happens.

You're saying your PC is getting slower. What you noticed to make you feel it's slower?
You said that Boot times are normal, so what is wrong?

Boot time is normal. It's just that sometimes my browsers and other programs freeze up and stop responding or will take a really long time to do things. Other times I doesn't do that.

But like I said, it hasn't done it that last 2 days since I stopped using Firefox, so maybe it has something to do with it. Only time will tell.

I've never heard of the hardware acceleration option. I see that it only shows that option if you uncheck "use recommended performance settings". So I unchecked both of them because I can't tell if it checked when "use recommended performance settings" is checked. Since it doesn't show it.

-Download Open Hardware Monitor https://openhardwaremonitor.org/file...0.8.0-beta.zip
-Unzip to C:\Program Files (x86)\OpenHardwareMonitor
- Run OpenHardwareMonitor.exe

Use your computer and then check min available memory.

It's been several days or so and I just wanted to report that this problem has been solved. Firefox and other programs are no longer freezing up.

I'm not exactly sure what fixed the problem. But I'm guessing it was when I unchecked recommended performance settings and hardware acceleration in Firefox, which lehnerus2000 told me about in #16 of this post.

The only other thing I did at that time was uncheck a couple of things in my start up folder. One was google updates and the other was something to do with hewlet packard. I have an HP printer and monitor, so maybe I shouldn't have unchecked that one, I don't know. But the problem wasn't occurring when I first logged on, it only froze up after I'd been on the computer for a while so I'm assuming it wasn't what I unchecked in start up.

Anyways. Thanks for all the help.