The file a0004056.dll is a part of the Service Pack in Microsoft’s operating system. These packs are uploaded to improve or add to the operating system.
If there was an error in this file, the problem was most likely in the removal or installation of the Service Pack. Other programs will write over programs during a download. Even worse, some programs you load off the Internet are malicious. They delete, corrupt, and damage registry files. This slows down your system.
To fix problems like a slow operating system, you can buy a good registry cleaner. Registry cleaners like SpyZooka will stop a system crash, “Blue Screen of Death,” slow boot speeds, and runtime errors before you have to wipe your whole hard drive clean and start over.
To try a free scan of SpyZooka, click here. The program offers a 60-day satisfaction guarantee, along with free resources for keeping your computer running clean.