Win7 Home Basic Edition upgrade win7 Ultimate system when prompted to upgrade failure analysis

1, first of all users must first determine, the system disk that you choose and purchase is not a genuine system disk, if it is not a genuine system disk, please win7 system users start a genuine win7 system disk again choose to upgrade, I believe the use of genuine After the system disk, the above fault should not occur.
2, when users upgrade, you also need to consider whether your computer hardware is too old, although the win7 is not very strict on computer hardware requirements, but there are certain basic requirements, therefore, if it is used Old computer hardware users, in order to ensure that win7 can run stably after the upgrade, it is best to be able to replace some computer hardware, such as CPU, graphics card or memory.
3, Another point may be that the user's upgrade method and upgrade steps have problems, for the Ghost win7 system users, before upgrading the computer, about installing the operating system or upgrading the operating system steps and methods themselves Not mastered, if you are not very likely to operate, then it is best to invite professionals to upgrade and install, so I believe that the upgrade failure will not appear