Running SH4 in full screen problems.

Hi all, Recently decided to re-visit SH4 after many years away from sub simming, purchased a copy of SH4 Gold (CD) and loaded up on my Alienware Laptop, it runs fine but only in windowed mode and no higher than 1920x1080, my laptop's native res is 2560x1440, if I try full screen or higher than 1920x1080 it runs the intro and then goes into a black screen. I have tried all the tweaks with CFG files and compatibility etc but to no avail, It still looks great in the lower windowed mode and runs great at maxed out graphic settings but after a few patrols squinting I don't think its doing my eyes any good! I have read many posts online and seen lots skippers running it fine in high resolution 2560x1440 etc, just wondering if anybody has experienced this with a new rig too and if there is any advice to cure it.
Many thanks.