The game Couldn't start

[Kodakk]

Alex, is that where your computer starts up and does the disc check? *gasps*

[=98=]

No, it occurs when you are copying data off a disc, whether that be via an installation, streaming music or simply copy and pasting.

The computer takes the data, puts it through a complex algorithm to produce another set of data which is added to the stream. So, the data on the disk plus the new data produced via the algorithm is sent to the computer. The computer receives it, runs the same algorithm backwards to check whether the data is the same as when it left the disc.

If the data on the computer after being unencrypted by the algorithm is different to the the data on the disc before going through the algorithm, then there is clearly a mismatch, and at some point, corruption has occurred. Windows will then throw up a Cyclic Redundancy Check error.

A simple method used by computers to check redundancy is bit parity. Wiki it if interested.

[Kodakk]

.... wow, neato (in awe)