Can’t install Premiere Pro CS5

Like the title said. The other programs are installed succesfull..
Got an error code on the end like:

Exit Code: 6
-------------------------------------- Summary --------------------------------------
 - 2 fatal error(s), 23 error(s), 52 warning(s)
WARNING: OS requirements not met for {288DB08D-0708-4A94-B055-55B99E39EB62}
WARNING: OS requirements not met for {33A3F995-8333-4676-8D6F-AB7674BB52EA}
And so it goes on
My pc specs:
OS: Win7 x64
CPU: AMD Phenom II X4 955
RAM: 4G DDR3
Mobo: GA-870A-UD3
GPU: ATI Radeon HD 5700
HDD: enough space to install
What could be the problem?
Answer #1
bump