Why exactly is the repair not covered?
Keep in mind, they tried to pull that not covered crap on me when I called up for a repair order, and I told them I had flashed the BIOS, they tried to blame me for my machine artifacting, but after several calls up the chain, they relented, and low and behold, the logic board got replaced.
If your machine is artifacting, and you didn't do anything yourself to screw it up, lean on them and they will cave in. This issue is not our fault, it's Sager's, but since my manufacturer warranty is expired, and I purchased extended coverage, it's their problem. Extended warranty places are much harder to deal with, they will try to screw you if you let them. Don't.