i have a late 2010 model air, it has been well cared for. today it froze so i did a hard reboot, a white screen came up for maybe 15 seconds then it went black and said "No bootable device -- insert boot disk and press any key". i tried my external HD that has my time machine backups on it but that didnt do anything. does this mean my SSD went bad? is there anything that i can try to fix it? i looked online and the only SSD replacement i could find was OWC 480GB for $600. i cant afford that right now, are there any other replacement options?