Hello,i am a novice on pc.
i make the stupid mistake to download GENUINE w7 home premium on 2 partitions.Now microsoft tells me this is not a genuine w7.So i can not activate the os.
i have a compaq pc 500gb-2 partitions-4gb memoryram.
i think the best way to solve the problem to wipe out the complete harddisc and install w7 again.
BUD I DONT NOW HOW TO DO THIS

CAN SOMEBODY HELP ME PLEASE

THANKS     henkjan1940Do you have Windows 7 DVD?yes i have w7 home premium dvd. Step by step tutorial: http://pcsupport.about.com/od/operatingsystems/ss/windows-7-clean-install-part-1.htmi follow all instructions,i has 3 partitions C/D/E
C 249GB,D400MB,E250GB.
I DELETED D AND E

I STARTED UP AND SEE I LOOSE PARTITION E COMPLETE.
ON C 249GB AND W7 HOME PRIMIUM AND MICROSOFT STILL TEL ME BUY A NEW ONE

I FEEL PIST OFF.ehm im a roocki but, if u say u have the w7 dvd then i think u could just go into CMD (as admin ofc) then write "diskpart", then write "list disk", then select a disk u wanna format FX. "Select disk 0". then select a partition on the disk "select partition 1" and then u clean it. "clean". then i suppose it will delete all data on that partition of your harddisk. im just not really sure that this will make it possible to clean your main disk partition with w7 on cus that is allready in use. worth a try? dunno if anyone else have a oppinion to this cus i might not be knowing what im talking abouthuh?

i now have 2 partions,working ok.
i follow all instructions and have on disc C (primery)my w7,but in the windows old still w 7 exciist,so window can not activated.You didn't follow instructions from my link then.
Clean installation doesn't leave any leftovers.yes i did all 3all 3 what?This should be good....you give me a site and i follow all instructions.they told me to follow 3 steps.the whole system was 34 steps ,and i did.wipe out everething and after the old w7 was in the saved old windows file,what suposed not excist.but still therei wil do all steps again.