I recently tried to add memory to an Emachines T6524. I researched and purchased the correct memory to upgrade. When the new memory is added, the computer will start with a loud and long fan roar from the power supply fan, but will not boot, or activate display on the monitor. I have tried several combinations of new memory with the same result. I have upgraded the power supply and still get the same result. When I use the same 1 GB stick that it came with, there is no problems. I can't find any BIOS updates, and the computer is said to have a max memory of 4GB.