Can not install LL4

[vectra246]

Hi all,

I am new here and with Linux.

I have tried to install LL4 on my laptop.
But when i double click on the install icon nothing happens.

I have tried to copy

Code:

sudo --preserve-env=DBUS_SESSION_BUS_ADDRESS,XDG_RUNTIME_DIR sh -c 'ubiquity gtk_ui'

in to Terminal. It wait for a few minutes and nothing happens.

I also can't start Partition Drives.

Please help.

Info :

Dell Vostro 3500 i3-M350 @ 2,27 GHz, 4 Gb RAM, 200 GB SSD (Kingston)
On SSD a partion with Windows 10.