This morning, when I put the computer on I got the following screen(see pic) and when I restarted, everything was normal except that partitions 'D' and 'E' would not open. When I tried to open it, a message appeared saying that it needed to be formatted. Both the partitions were almost full. I have not done any new software or hardware installations and the computer was fine last night. Also 'C' seems fine and I don't have any problem accessing it. I have just this one hard drive with 3 partitions: C, D & E. I'll be grateful to anyone who can help me out with this.