What happens when you can't open a variety of software after you reload your computer system?

1, after the installation of the system may appear compatibility problems, such as the system from 32 to 64 bits, it may lead to software can not be used, can only reinstall compatible software;

2, reload the system when the format of the C disk, delete the registry related items, desktop things are also deleted, it may lead to incorrect path, or the software folder is moved after the path is not correct;

3, there is also a possible operation of the software needs specific program support, the new system does not correspond to the program or version, such as many games need DirectX 9 support, you can search the Internet to find what the software needs, and then install the corresponding program can be.