Legacy driver doesn't install on HP laptop

I've got HP Pavilion dv7-4024so with Windows 7 Home and Mobility Radeon HD 5650. I have downloaded newest graphic adapter drivers from this page but neither of the two install properly. Each time logs say installation has failed. What gives?

 

Laptop info:

Mobility Radeon HD 5650

HP Pavilion dv7-4024so

Windows 7 Home 64-bit (Finnish language)

Catalyst driver 8.712.2000 (from HP site, installs no prob)

Turion II P520

4 GB of RAM