switchable graphics problem

ChayanM

Honorable
Sep 11, 2013
1
0
10,510
i have hp probook 4540s in which there is intel hd graphics 4000 & 1gb ddr5 radeon 7600m graphic card but when i play games only intel graphics are used it does not switch or use external graphic card why? and in run command dxdiag it only shows intel graphics 4000.