I'll start by saying i have 2 mx300 ssd's one for os and another for flight sim and other software. i recently installed train simulator from steam and after that i noticed the drive was not acting right, slow loading games, pc would freeze and i would have to restart. i finally decided screw it and used crucial storage manager to sanitize drive and start over, now nothing will install on the ssd,i cannot update the firmware as it says the drive has stopped the process. i cannot even run a benchmark on the drive as i get an error that file is being used by another process. my other mx300 with the os on it has been fine updated and benchmarked with no problem. i have tried to use chkdsk, diskpart and partiton wizard and nothing seems to be helping. i have installed prepar3d on my other harddrive and it installed fine, when i go to insatall anything on the mx300 different errors pop up at different times. this is my last resort before i contact crucial for an RMA if someone can help it would be greatly appreciated. just to add crucial storage manager has the disk listed as being okay. Thank You in advance for your time