Hi guys, Trying to squeeze the most performance out of Fallout 4. Before you boot me for not searching the forum for a solution, I need to say - I've searched and followed a couple of guides. This is not my first time installing Catalyst drivers by changing the right string, generating new cat files and signing, i've successfully installed a dozen previous drivers. However, the new drivers are not at all alike to the old files and I find myself at a loss of knowing what to do here. I've followed these two guides: Guide 1, Guide 2 As I understand, at this point it should just work. For the past X drivers the steps have always been the same, but in this 15.11 release the strings are different and I'm not certain I'm calling the right ones out. Hardware: nMP, d700 Can anyone help? Has anyone managed to install 15.11? Edit: SOLVED!!!!!!! Literally lactating with joy! I used a combination of the two methods I stated above. Edited the .inf and the installer cfg as stated in G2 (but pertaining to my specific Hardware ID that I got from Device Manager, then generated .cat using inf2cat from Windows 8.1 Kit, then restarted with disabled signature verification, ran Driver Signature Enforcement Overrider as admin, enabled test mode, signed both inf and cat files I made in c:\Test, then updated the driver from the Device Manager (manually select, have disk). TA DAAAA! Ps- If you intend to use DDU to wipe all your gfx drivers, DO NOT restart immediately after, as this could leave you with a useless windows installation with the infamous "black screen with active cursor" bug. Better to get rid of your old drivers via the regular AMD Uninstall in your Programs dialog in Control Panel. I learned the hard way and have to reinstall a terabyte of stuff.