I got a new case (Thermaltake View 27) and I'm having trouble undoing the screw on the PCI shield thing where the GPU should be. I can undo all the other screws except this one.

Can anyone provide tips on how I can go about getting it loose so I can unscrew it?

I've already tried Google but they all relate to damaged screws or screws stuck in wood.

This is still the same problem. How to deal with a stuck screw. I use my pliers, needle nose with serrated grip surface or cut a slot in the screw head to use a flat blade screwdriver.

The Google I shared noted the hammer method too. Not everyone is as handy as Red Green so get help or just RMA the case as defective.

I'll try the pliers method. Need to buy some first.