not able to clean install windows 8

i want to clean install win 8 on my new lenovo, i have heard that OEM key is stored in the bios and is automatically applied on a clean install. i have downloaded windows 8 file from internet- en_windows_8_x64_dvd_915440.iso .

i tried installing windows, when i click on "install now" , it automatically shows the message- "the product key entered does not match any of the windows images available for installation,enter a different product key". when i click "ok", it goes back to the initial start screen where there is an option to either install or repair windows 8.

i have no idea what is the problem here , the product key should have been automatically applied, but here it is showing the error message. do i need to ask for a DVD from lenovo?

Answer

If you have an OEM system/key, then you need an OEM installation disk I believe. I know for pre-Windows 8, these disks were usually different than the retail disks that you bought in the store.

You should be able to get such a disk from Lenovo, or acquire it from any other source as long as you verify the SHA1 hash of the file. It looks like the following disk image should work for any Windows 8 key, retail or OEM:

Filename: en_windows_8_x64_dvd_915440.iso
SHA1: 1CE53AD5F60419CF04A715CF3233F247E48BEEC4

You can get it from MSDN if you have access, or through alternative means-- Just make sure to double-check the SHA1 hash so that you know the disk image has not been tampered with.

_{Just noticed that this is the disk image you have. Leaving answer here for anyone else that runs into the problem that the answer applies to.}