Hi there! I recently bought a E1 572-6676 acer laptop. I had a ssd here. It's a sandisk #SDSSDH 120g G25. I put win 8.1 on it. It boot very well when i put the ssd on a USB port (with an adapter) but when i put it at the place of the HDD, it does'nt want to boot! I have alway critical process screen! I tried a lot of thing... Clone the disk, put an image, boot secure able, boot secur disable, with UEFI, with LEGACY... So now, i'm a the limit of my knowledge... Can someone please help me? Got an idea?? And, oh, i'm sorry for my english, i'm from Quebec, i speak french... So if there's some mistake, i beg your pardon!