C:\ device was red when 'Computer' screen was opened. This was a big surprise as I had just completed a W7 defrag and I had 177GB of free space with 287GB space used. The reason for the defrag was because my C:\ drive was at 6%. I got back 61GB of free space. After that I decided to delete some old incremental backups from the local HDD as I have been using an external HDD for backups for the past year. I had 5 backups to delete and the product instructions recommended deleting them one at a time, starting with the last one created. It was only 2000MB. There was no option to delete everything at once and the backup folder is hidden and protected by windows. I selected the last one (2000MB) for deletion and 3 hours later it was still running so I thought it was weird. I put in a thumb drive to do some other work and the computer screen opened. The C:\ device icon was red. There was 11GB remaining. I had received no audible alert. I'd like to know if there is an audible alert that I could set for this, If anyone knows, I'd really appreciate it. Do not want this ever happening again. NB: Before absolute disaster reined down on me I ended the backup task. I then made some system changes so I could view the backup folder and delete the backups manually. It took about 2 secs to do it this way.