My macbook air recently started having a blank white box pop up on the screen and the only way to get rid of it is to restart the computer. This happens almost every time I use it. Picture attached. Also upon start up another pop up occurs stating my memory is full, and to delete applications but I still have plenty of memory left. Appreciate the help.
MacBook Air 13″, OS X 10.10
The warning is not about memory, it's about disk storage space.
Get Correct Storage Information
Do not use the information from the Storage section of the About This Mac dialog. Ignore the Storage information as it is typically wrong. To find out the correct information for any disk: Select a Desktop disk icon. Press Command-I to open the Get Info window and look at the topmost panel displayed. You will find the disk information displayed for Capacity, Available, and Used. If you have more than one disk/partition then repeat for each one on your Desktop.
The categories found in the Storage section of About This Mac is simply an arbitrary way of displaying files on your drive. There are no such categories actually on the drive.
How to Free Up Space on The Hard Drive
Blank white box on display screen
