How to disable integrated GPU on HP laptop !

HSGPORT

Honorable
Nov 24, 2013
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So i have Hp laptop with Radeon Hd 7640G + HD8750 M . So the problem is that i have 4Gb Ram but it detects and uses only 2 of them. I think that the integrated one is using 2gb of RAM and my computer laggs and i want to disable it.
 
Solution
Check the BIOS, there should be an option to either disable the integrated GPU entirely, or reduce the memory it grabs.

Also make sure you don't have a bad DIMM.