IXUS 75 - will not turn on

Question

I've now had 2 of these cameras the 1st camera had the issue where the lense shutter woudn't open.This time the camera will not turn on. The shop I purchased the camera from will not replace or repair it beacuse I purchased the original camera 54 weeks ago! And i can't find the reciept given to me when they replaced the camera.Is there a reset buttton that I can try and find or should I just bin it and buy another camera?