My mac book pro is verry slow, and problem with wirless, battery, cooler

Hello,
I bought 2 months ago Mac book pro 8,2  intel core i7 2760 QM  CPU@ 2,4 ghz 8 core,  I installed boot camp, 64 bit , and everything is running verry slow, boots up verry slow, programs, browser runs very slow, and i have a problem with my wirless connection, i get , after a wile of usage "Limited Connection" and i have to reconnect to network ( on other notebooks i dont have this issue) .
My computer runs slow because of my Hard drive 5400 rpm? 
And how can i preserve my battery, are there Spare batteries on the internet for this macbook.
Sometimes when i play alot, my computer gets very hot. What cooler do you recomend for macbok pro, i heared that fan coolers aren't verry good.
If i use my macbook pro alot , it can break or something?
<EDIT> I forgot to tell, i cannot update to my lates graphic card software, i can''t update anything. I download the update and it tells me that its not compatible with the hardware. (and yes, it is the right version 100% compatible)
Thanks for your help.

Rid the MBP of Genieo and Norton AV.  For Genieo, use these instructions:
http://www.thesafemac.com/arg-genieo/
Check the Norton web site for removal instructions.
If your MBP has had kernel panics. log one and post it per these instructions:
https://support.apple.com/en-us/HT201753
Ciao.

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