BackBox linux 5 GUI not working on virtualbox

[pro_devel]

as the title says , when I try to boot Backbox on virtualbox it's loading normally then when it's time to boot into OS , multiple colors appear and nothing else on screen .
NOTE : iso image works correctly , when boot it in PC .

[ZEROF]

Just download again check your MD5 and install it. This have nothing with BBox, it's about your installation and settings. I run BBox in VM without issues.