windows 7 on different hard drive and activate it using the correct microsoft product Acer 5517-5689

I have an older Acer 5517-5689 I am trying to load windows 7 on to give to someone. The hard drive was removed before I got it. I installed a 160 gig I had and with a windows 7 home prem disk I loaded it using the windows 7 product key numbers on bottom of case. Now when I try and activate windows it won't let me saying it is not the correct id. I have checked three times and I did use the correct id values. Anyway I can get this old thing to activate. It runs great but I know I got only three days to activate . I have it connected wireless on the internet and it actually is pretty fast. I just need to complete this soon. Thanks for any help.

//Edited the content to add model name.

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trig

Also this is the 64 bit version I used to load windows . I see nothing saying anything about the product id on bottom of case being a 32 bit. It has been a while since I did computer work but in the past I did many but this one has me stumped. Probably something simple . I hope anyway.