I'm sorry to raise this question that so many before me have asked. I have read pages and pages of MS forum discussions on this topic, and without exception, every Microsoft expert says registry cleaners are completely unnecessary and that old junk in registries does not impact performance at all. Instead, they say, do x, y, and z. I am running Windows XP on my five-year-old desktop, and it has gradually gotten so slow it's almost intolerable. It takes 10-15 minutes just to boot up, and sometimes it takes 2 minutes or more just to open a browser window (IE8) or go to the previous page using the back arrow. Before you tell me all the things it could be, please let me say that:
1. My PC has not always been this slow! It's getting worse and worse.
2. All my Windows software is up to date. I have automatic updates turned on.
3. I have plenty of disk space, almost 75% free space on an 80GB hard drive.
4. My PC is free of viruses, spyware, and trojans. I have McAfee Anti-Virus running, and I also occasionally run Malwarebytes and Trojan Killer, as they always find things that McAfee doesn't find.
5. I defrag my hard drive regularly.
6. I regularly delete all my temp files using the Windows Disk Cleanup utility.
7. I have very few, if any "add-ons". No Yahoo or Google (or Bing!) toolbars.
8. I have removed almost every program I have from Startup, so they are not running in the background.
9. I have uninstalled every program that I don't use.
However, I still have an ever-slower computer. Sometimes, when I see ads on TV for increasing my PC's speed, I download the "free scan" software, and they claim to find hundreds or thousands of "registry errors". When I look at the logs, I see numerous registry entries for "Netscape" and "Google Earth", which I uninstalled years ago, as well as entries for videos I downloaded, viewed once, and deleted long ago.
So, what is the problem? If it's not related to my registry (which Trojan Killer says has over 6,000 entries!), what else could it be? I will greatly appreciate any advice you can give, because there are dozens of companies out their touting their registry cleaners and uninstallers (for a price), and I am skeptical of their claims after reading the MS MVPs' comments. Thanks. :)