can anyone help me please, i was making this wallpaper and then i put my computer on stand by, then when i turned it back on i got this error:

Windows - Delayed Write Failed
Windows was unable to save all the data for the file
\Device\HarddiskVolum2. The data has been lost. This error
may be caused by a failure of your computer hardware or
network connection. Please try to save this file elsewhere

has anyone else gotten this error before. i have never seen it and what does it mean?