Toshiba Satellite A75-S211 (almost the same as S226): Powers on, fans turn but computer will not boot. HD button blinks...

On mine, I used a shop vac, placing the suction hose over the fan ports. I had to keep the pressure on for a few minutes to suck the dust bunnies past the grid, but is's clean and the fans spin nicely. Best fo all, the laptop no longer freezes due to overheating.