I've also tried the commandprompt trick on here to no avail either. Strangely, whenever the Windows CD is in my CD-ROM, it starts up fine and works. However, I will go to work and come back after having left it on and it will be back to the BOOTMGR is missing screen inevitably by the time I get back, so I don't know long it stays working with the windows 7 CD in. Any alternate ideas OTHER THAN the startup repair and commandprompt suggestions offered on here? Would a clean re-install of windows 7 do it? I would prefer not to but it isn't out of the question. I am something of a computer novice, but as best as I can tell, I have a Corsair SSD with windows installed on it, and a separate regular old HDD from Seagate for storage of media. Please let me know any solutions you have.