WINDOWS 7 PUBLIC BIULD BETA DIRECT LINK

download link

http://download.microsoft.com/download/6/3/3/633118BD-6C3D-45A4-B985-F0FDFFE1B021/EN/7000.0.081212-1400_client_en-us_Ultimate-GB1CULXFRE_EN_DVD.ISO

Here is the 32 bit version of windows 7 offiicial download

http://wb.dlservice.microsoft.com/download/6/3/3/633118BD-6C3D-45A4-B985-F0FDFFE1B021/EN/7000.0.081212-1400_client_en-us_Ultimate-GB1CULFRE_EN_DVD.iso?lcid=1033&RURL
https://www.microsoft.com/betaexperience/productkeys/win7-32/enus/default.aspx