Big Daddy said:
Has anyone used the services of this web site, such as RegistryFix, or Windows Startup Fixed?
Click here
Big Daddy, as others have mentioned, it is probably not a good idea to toy with the Windows registry and other software along those lines. As Tom suggested, formatting the machine and starting over is easily your best bet. But before you do that, I absolutely must recommend two programs for you to download, install, and run (both programs are free).
Lavasoft Ad-Aware:
http://www.download.com/Ad-Aware-SE-Personal-Edition/3000-8022_4-10319876.html?tag=lst-0-1
Spybot - Search & Destroy:
http://www.download.com/Spybot-Search-Destroy/3000-8022_4-10289035.html?tag=lst-0-2
These two programs scan your hard drive(s) to make sure there is no spyware or adware installed on your computer. Both programs can either "quarantine" or remove any and all spyware/adware installed on the computer. I recommend using BOTH programs because one program finds some spyware and the other program finds others.
I feel like these two software programs are absolute NECESSITIES for any machine. They are completely free and they constantly release updates for you to download and run (very easy to do, it does it for you in the program itself quickly).
Here are some maintenance tips to keep a PC running smoothly:
-Run Spybot and Ad-Aware (the two programs above) once a month to keep your system clean.
-Run the Windows Disk Defragmenter once a month to keep hard drive contents organized (accessible through Start>Programs>Accessories>System Tools>Disk Defragmenter).
-Keep wallpapers, desktop icons/shortcuts, and stupid effects along those lines to a minimum. I know none of you like hearing this, but these things all eat into system resource and are not an uncommon cause for Windows crashes.
-Always uninstall old programs through its designated Uninstaller. Do NOT go to the folder on your hard drive and send it to the Recycle Bin!
-Keep free demo installations to a minimum. Demo versions of software are often buggy and not easy to uninstall.
-Always turn the computer on and off appropriately. Power it on with the power button and then turn it off by going to Start>Shutdown. Laptops have Suspend mode, which is fine to use, but your laptop or computer should get a fresh reboot ONCE A DAY.
-Do not uninstall anything that is unfamiliar to you.
-Do not run your machine 24/7. Yes, most dekstops are capable of this, but not laptops. Most laptops still do not have the proper cooling to run 24/7. It will overheat or parts will burn out much sooner than they should.
If I can think of anything else, I will post.