I was using my 2010 MacBook fine last then then this morning I opened lid to send an email and had the rainbow spinning for about 10 mins. I then held power to turn it off and when I restarted it, just had a white screen. After a few minutes, a folder icon started flashing with a '?' In it. I have tried to boot in recovery mode by holding 'cmd + R' and by holding options key but neither seem to do anything. Any ideas/suggestions will be appreciated!