Software is one of the leading causes of computer related issues. Because of the large variety of computer hardware configurations and other software programs that may be on a computer, it is nearly impossible to program software that is flawless.
Because of the various types of software and the high potential of errors or bugs when the software is created, software can be the leading cause of computer issues. These issues are generally resolved by either not running two or more programs at the same time if they are causing issues with one another, or reinstalling the software. If the software has an actual software bug in the program, these bugs are generally resolved by patches or software updates.
The above information is only applicable to some of the software found on today's market. Generally, when any software is released it undergoes an extensive amount of testing or Beta Testing by the company or individuals whom volunteer their services for a chance to look at and test the software.