A computer's registry is one big database that has numerous files, options, and settings. These settings and options keep changing with every second of you using your PC and can lead to the damage of some of these settings. This causes errors to show up and the computer to have a BSOD. Registry cleaners http://computer-e-book-money.com software scan the computer's errors and matches all files and settings with the applications that use them. If it identifies any file or setting to be damaged, missing, or corrupted, it provides you with an updated list of the same and also repairs these errors. Therefore, if your computer keeps crashing and need to fix blue screen of death a good registry cleaner is all you need. Your computer can also cause problems because of redundant files in its registry. Registry cleaners identify all these redundant and junk files that were left over during the uninstalling process of hardware of software and delete them. This makes sure that the "computer keeps having the BSOD" issue is taken care of.