I’ve had good experiences with PC Specialist, they’re based out of UK but ship to Ireland. got a decent spec laptop from them and the gf got one a few weeks after.
Both arrived working great, with very quick turnaround times. equivalent spec cost almost twice as much from Dell, and pcspecialist are highly customisable. I did quite alot of research before purchasing, and they seem to be the best for the money.
They do 3D laptops, definitely a 17 incher, not sure if there’s a 15 inch one too.
Do Dell lock BIOS? is that something new, because my 2.5 year old Dell ‘s BIOS is configurable.