Can't install Battery Care and so on

Hey,

few years ago I bought Sony Vaio VPCSE2KGX with W7. I was using battery saver to charge only 80% of accu's capacity. After some while, I had to reinstall Windows and since then I cannot instal back the Sony features necessary for allowing the full charge. Except for this also my Bluetooth, external graphics and keyboard shortcuts don't work even when I used original drivers downloaded from Sony web pages on W7 or W8.

Now I'm using W10 and the short battery life is starting to annoy me. Can you please give me some advice how to use the whole capacity again? As far as I looked on the internet, I haven't found any advice.

Thanks,

Petr