Grey box pop up on boot

aodesigns

macrumors member
Original poster
Mar 29, 2015
84
0
Any idea what this box is? get it every time on boot since upgrading to 10.12, rMBP 2015 connected to 24" 4k monitor (dell)

Hangs around a few seconds and then vanishes. Just visually irritating.

 

fisherking

macrumors 604
Jul 16, 2010
6,718
1,688
ny somewhere
some app that loads when you start up? (check your login items). i sometimes get a momentary blank window (from Forecast Bar')...
 

aodesigns

macrumors member
Original poster
Mar 29, 2015
84
0
odd one. try reinstalling the OS...
Tried this, also still pops up with no peripherals connected
[doublepost=1476467624][/doublepost]Appears the issue was Razer Synapse, driver to my mouse. Anyway of finding out which process was causing this? no login items were turned on
 

fisherking

macrumors 604
Jul 16, 2010
6,718
1,688
ny somewhere
delete the driver/software, reboot. problem gone? try reinstalling and if the problem returns, contact the developer (or just contact the developer now...:D )