If you used the Registry crapware then I'd reinstall with the latest official installer with SP1 provided in Clean Reinstall - Factory OEM Windows 7.
Registry Cleaners are horrible, deadly decisions best remedied by starting over sticking with only the tools and methods which guarantee a perfect install.
I uninstalled Avast, RegCure Pro, IObit Malware Fighter and Tell me more. Tell me more is a program for learning Italian, but I uninstalled it anyway. I updated Atheros, but I can't install Service Pack 1... I don't know why, but when Windows Update starts installing Service Pack 1 it says that it failed. It says that there are errors and it shows me this: Code 800B0100 and code 80004004. I did everything you said except for the Service Pack 1 update and it still doesn't work, the laptop still freezes after some time.
Try Greg's great tutorial about doing a clean install, the .ISO within the tutorial provides a Windows 7 installation (remember to select the .ISO which matches your current Windows 7) which contains Service Pack 1; the registry cleaners most probably have also developed some hidden damage to your system.
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