Needed: NO VCC Name Business addy Phone number (it can be made up or generated) Email (I recomment using mail.com and picking a logical domain) Chasis SN that contains the GPU GPU SN - with active contract Made up company Method: You will be calling in as a consutlant under your fake company name. You get them to disclose the name of original company that purchased it if you can't find it yourself prior/if its even needed. Its not needed most of hte time. Then you find yourself a workstation SN that originally was manufacutred with a Nvidia M4 or M6 (M600 are more profitable and flip quicker on ebay(. Get a serial for your m4 or m6. Call into the manufactuer of the workstation and they will transfer you to the correct dpeartment - if your using HP the short cut is #0#0*#0* and say z series running windows. Other companies go along with the automated system or use the same shortcut to bypass it and talk to a rep. Once in the correct department you supply them with all the needed info posted above, and let them know your GPU went down and you have a black lit screen but no graphics and the GPU is showing the correct lights. When you took a closer look you pulled it out because you could hear the fans running at way too high of RPMs. Let them know you can not access the logs or bios of the device and need a full replacement. Shipping info will come after that and you should recieve a m4 or m6.