I had an upgrade a few months back and an SSD fitted for the C: drive. It kept failing to boot. I understand there was a manufacturers fault with them. I had a new one substituted (OCZ Sata 111). This one has never worked fully either. Every other boot fails, the other day I had to turn off and restart six times before Windows would launch. Sometimes it will go for a couple of days and be fine, booting every time. Others it will play up, either needing one or two powerups, or as I said, sometimes up to six. What can be done to reslve this once and for all?