torrented hp computer?

[825]

my computer:
»HP Pro 3405 Microtower PC
Serial Number: CZC2225TX1
Product Number: LH132EA
i got a torrent of windows 8.1 and decided to get windows 7 back but this time i do not have the normal software installed (like you already have installed content) and now my computers slow. i cant factory reset because i dont have a cd. what do i do. thanks

[Carling]

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