When my machine gets too slow I prefer to format the disk instead of screwing around with all that crap and pay for them to fix it. I have all my stuff on one of the partitions of my 200 GB drive, back it up and flush the disk. Yes, we used to use Regclean but they took it off. It does give some relief but you also have other issues. Sometimes it would take off stuff that was necessary. Windows Office suites of all things and you would have to reinstall software. Finally, I found it was easier to flush the entire thing than to band-aid the thing. Also when you flush, you have a new hard drive that is formatted and free of some of those pesky programs that are still hanging around lurking. Sometimes you can use Codestuff Starter to see what is being activated on your machine. Also use your task manager to see how close to the edge you are running as far as resources.

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01 Ford Excursion Powerstroke
99 E300 Turbodiesel
91 Vette with 383 motor
05 Polaris Sportsman 800 EFI
06 Polaris Sportsman 500 EFI
03 SeaDoo GTX SC Red
03 SeaDoo GTX SC Yellow
04 Tailgator 21 ft Toy Hauler
11 Harley Davidson 883 SuperLow