What are the specs of your Surface Pro? Which version of Sib. 7? Are you launching Sibelius from the Start Menu or a desktop icon?
Some thins to try.
Change display settings to %100, not just to below %150.
Navigate to C:/Program Files (x86)/Avid/Sibelius 7/. Scroll down to the Sibelius exe. Double clic. If Sibelius opens, you will know that your other short cuts are not good. Right clic the exe. and send to desktop. Delete the old icon, if there is one.
Try running Sibelius as Administrator by a right clic of the exe. From the right clic, you can also troubleshoot compatibility.
If Sibelius does not open, reinstall the Sibelius software (but not the sounds). There is an outside chance you might have to install with an older OS compatibility setting.
Sibelius 7.5, W10,i5,16 GB ram,desktop