Hi, first post here and I must say what a wealth of info, I belong to other forums aswell but they pale in comparison to the knowledge here, I have been lurking but now its time for a post, here goes. Ok im trying to install Vista using a Install DVD with all the variations of Vista on the DVD, I can install Vista up but upon reboot Vista tells me the product key is wrong upon activation (the letters are smudged). So I have re-installed again using a different key and the same error appears, I do have a legit COA but I cant install Vista Home Basic on a Compaq C700 well a C74OEM to be precise. Does anyone know how to help me as I have a £400 brick at the moment, I have been reading about OEM keys, is this the route I should take? and if so how do I go about this. HP wont help me even after £8 on mobile phone calls Thank You.