Hello! I have Dell Inspiron M5110, AMD A6 with 2 videoadapters: AMD Radeon HD 6520G + AMD Radeon HD 7400M.
Windows XP don't support switching between them. By default only Radeon HD 6520G is working while AMD Radeon HD 7400M is not. AMD Radeon HD 6520G have very poor performance.
How can i switch Radeon HD 6520G to Radeon HD 7400M?
Sorry for bad english, please.
You cannot - the GPU is part of the mainboard and cannot be upgraded, nor will XP support hybrid Intel/AMD GPU switching - you need to be running Vista, 7, 8 or 10 for that.