client problem

when i installed clients on windows 8 platforms, all the systems crashed which forced me to recover the system in order to get my computers back to live again.

notice the i have endpoint enterprise edition 12.1

I tried the new clients which i downloaded form the link below which the same thing happened.

https://symantec.flexnetoperations.com/control/symc/download?element=4660991

anyone have a solution please?

thanks