Showing results for 
Search instead for 
Did you mean: 
New member
1 0 0 0
Message 1 of 3
Flag Post

Missing Windows 7 product #

HP Recommended
HP Pro 3500
Microsoft Windows 10 (64-bit)

I have a HP Pro 3500 C9J26UT Desktop PC Serial [edit]. I upgraded WIndows 7 to Windows 10 and need the original Windows Product Key to activate Windows. I do not see it anywhere on the case and was not given it when I bought the computer from Tiger Direct. PLease email me or call me at [edit]with the product key or where to find it. Thank you. David Levine

Level 16
25,082 24,632 3,568 8,034
Message 2 of 3
Flag Post
HP Recommended

Welcome to the HP Support Community  @srmarathon 


HP and all manufacturers do not retain records of COA's


Buy a new W7 Pro 64Bit from eBay.



0 Kudos
Level 21
Level 21
132,210 122,387 20,117 30,849
Message 3 of 3
Flag Post
HP Recommended

Hi, @srmarathon 


Some HP 3500 Pros came with W8 motherboards, which have the product key in the BIOS.


it is possible that your PC has a W8 Pro product key in the BIOS and had downgrade rights to W7 Pro.


Run this free utility that I zipped up and attached below, to see if there is a W8 Pro product key in your PC's BIOS.


If there is, you may be able to use that key to activate W10 Pro.

0 Kudos
Warning Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation