prompts

recently my desktop developed a problem... when the system boots up, while the desktop icons appear, a message comes which says that 'lmgrd.exe caused some error and it prompts for error reporting.... what could this be?

My pc was working fine when all of a sudden i'm not able to access 2 of my HDD prompts(I've six and D: & G: r not accessible).Whenever i try to access them from Win Explorer i get "Access Is Denied".I can access the prompts from <Ctrl Panel - Administrative Tools - Computer Management - Disk...

hi there, Many times when I try copying some data from the cd to the drive it prompts an error which is "cyclic redundancy error". wat does this convey?