Black screen

[Btone]

when i log into my account on my laptop i get a black screen for about 3 minutes before i see the normally screen. if i log into a different account on the same machine. i get straight to the normally screen.

any ideas why on my main account it sit at a black screen for so long after i log in (i can see the mouse pointer move)

 

[Btone]

it my old laptop which i give to my nice, it her account that acting odd, when i log in with my account it runs fine, also if i take the SSD out and put it in my new laptop (a newer ver of the old one) her account starts up fast again.
have followed a number of guides on fixing it and the nearest that comes close to fixing it is deleting the iconcache files. bt after a few restarts it back to taking ages to get into wins