Cyclical redundancy errors are is a complicated term for a very simple problem. What it means is that your computer cannot read the information that is stored on the disk or file that you are trying to use. Usually this is a problem with the disk, but in some cases it can be an issue with your hardware.
Usually you will see the cyclic redundancy error when you are trying to read a damaged CD or DVD disk. The computer will try to read the damaged files on the disk. When it fails to read it, the computer will try a second time. This usually creates a grinding sound in your disk drive. If you are hearing this sound just before getting a cyclic redundancy error, it probably means the disk is damaged.
The first step to fixing a cyclic redundancy error is to clean the disk that you are trying to read. Often times this will fix the problem, and your computer will be able to read the disk properly. If cleaning the disk doesn’t fix your cyclic redundancy error, it means that there is a more serious problem.
The next step is to try the disk in a different drive. Doing this will let you know whether the problem is a damaged disk or an issue with your drive. If the disk reads properly in a different drive it means you need to look at your CD drive. When you are doing this, make sure to check that all the wires and cords are plugged into the drive securely. Make sure you turn off your computer and unplug the power cord before doing this! If you are not comfortable with taking the case off your computer and working with the connections, then take it to someone you know and trust.
If you are still getting the cyclic redundancy error even though you are using a different drive, it means that a portion of your disk is damaged. In this case, you will need to use a disk recovery tool to get the data off your damaged disk. This should solve your cyclic redundancy error if the problem is a damaged disk.
Cyclic redundancy error can also be caused by a bad or incomplete files that your computer is attempting to read. If you are getting a cyclic redundancy error, or other messages such as not a valid windows file, or corrupt zip file, it means that the file is bad and will need to be replaced. This is a much less common problem, is easily identified, and can be fixed with little trouble.
Cyclic redundancy errors can be difficult to face. Often the first thing that goes through your mind is, “Oh, no! My computer is broken.” But in most cases the problem is not with your shiny new computer, but rather with the much cheaper CD or DVD. While recovering data from a damaged CD can involve a little work, it is much better than having to do major repairs on your computer.