Drivers not installing.

[Jon Tidy]

Support please help.
I have been trying to reinstall my Displaylink drivers since visiting a site that had another USB video display.
I keep getting pointed to
http://displaylink.com/support/ticket.php?id=360
but neither of the two suggested options work. I have installed a thin2000usb video programme.
I have run the Displaylink compatibility checker.
one log states
# DisplayLink Compatibility Check ver. 7.7.57957.0 started on 2015.03.16-09:58:11
Critical ae7dbd00729f4ad9772f01bdb5c63967 "DisplayLink has detected USB graphics software installed from a different vendor. This software is not compatible with DisplayLink USB graphics software and must be uninstalled before DisplayLink software can be installed." http://www.displaylink.com/support/c...2f01bdb5c63967
This system is not compatible with diffingStoring a new value for LargeScreenBoostCapable: 0Store action - location 'Core', key 'LargeScreenBoostCapable', value '0'

I have searched the registry but cant find LargeScreenBoostCapable

I have also run the displaylink removal tool and CCleaner to clear out the registry but no luck.

The version I am trying to reinstall is DisplayLink_7.7M4

Thanks in advance.