You can't fix registry errors manually. You can just remove it. Fixing and repairing of errors is only possible with the help of registry cleaners which will not only fix errors but increase efficiency of your PC also.
Fully patch the system, if running Windows make sure all MS paches are applied. Google "ewido" and download AVGAS software (it's free) and run it as a cleaner to squash the last bugs. You will get different results with different registry cleaners. There is not best one either, however before making any changes make sure you take a backup. Try to use different tool,I like use the Perfect Optimizer. I think it's useful.
Spybot: Search and Destroy is a very reliable source for cleaning windows registry. It is free and can check for issues on all drivers and use every possible method to correct them. Also, Ccleaner is a great alternative, it scans the registry for issues and recommends which actions to take while fixing the issues that can be removed.
Registry cleaners are designed to keep your registry without any errors and also it will delete the unwanted entries in the registry so that your system will be more stable and fast. If you don't know how to do it. You also can use software to help you.
A windows based utility for finding and fixing physical and lofical errors on disk
Dot1xcfg.exe is a system process error on the Windows platform of computers. The best thing to do is to use a registry fixing tool and detect and fix the process.
There are many ways that people can fix registry problems on their laptops or PCs. One simple way is to download or purchase a registry fixing program that will do all the processes for you.
Improve your PC performance with registry cleaner by fixing all registry errors. Google cnet advanced systemcare free and there you go you get some other sweet tools like game booster spyware/Trojan protection etc etc there is a pro version witch i currently use and trust it but you have to pay for it but there is a free version of it.
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If you are on Windows XP then use Disk Defragmentor and Disk Cleanup which can both be find in the Start Menu under-- Start -> All Programs -> Accesories -> System Tools. You can also check out programs on the web like a registry cleaner. Registry cleaners are very effective when it comes to speeding up your computer and fixing common errors.
Debugging means find errors and fixing them so that a computer program works properly. In Excel, that would be applied to finding errors in your spreadsheet formulas and fixing them.
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Applications that involve registry changes are very powerful, unless you are very careful and somewhat knowledgeable about operating systems, you can certainly do more harm than what little benefit you derive from mucking about in the registry. Its always safe to make a back up for your registry. But by Registry Booster do you mean the Uniblue one? If so yes it is. But i suggest using CCleaner as it does a similar thing by cleaning and fixing registries