1, if it is a hardware reason, then you need to consider the replacement of the relevant parts.
2, if the hardware support, then you can see the system language Settings error, and fix the error.
In the start-> All programs, find attachments. Right-click the command prompt and select Run as Administrator.
Type bcdedit in the command window, and then press ENTER. Check to see if the language of the Windows Boot Manager and the Windows boot loader locale corresponds to the WINDOWS7 system language.
If this is not the case, type the following command in the Command window to modify it:
(Note: Xx-xx represents the language.) such as: China ZH-CN)
Restarting the computer will take effect.
If you still do not have a boot animation, you can try to use the installation CD to repair the boot animation using the Repair option.