dont expect it to last, the towel trick works but it'll be on its way out again soon. Its not to do with bad sectors, its the fact the xbox has a very bad design. The fan isnt powerful enough to stop the console overheating. The motherboard basically warps under the heat with time and becomes bent. The motherboard ends up touching other components and the solder melts between them, the X-Clamp replacement repair can work in some cases but in others the motherboard is just fucked and needs replacing. Mine did it and I got it repaired under there extended 3year warranty for the RROD problem.