Oh boy, I don't know how many threads about this question already exist ,but here comes another one. so I have a lenovo G510 notebook with windows 8.1 64 bit , according to the stickers under the keyboard it has an intel inside core i5 and of course an AMD RADEON GRAPHICS card .Now the thing is that I noticed that in most of the games I play the configurations always say that i'm using an "Intel(R) HD Graphics 4600" , but I want to use my AMD RADEON, so I tried to look this up, and I may be wrong (feel free to tell me if it's bullshit) ,but I believe that my notebook has 2 graphics cards and if I remember correctly they are switchable so that if the AMD heats to much then I can simply switch to the other one, how ever it seems that in order to switch to the AMD card I have to install the AMD Catalist driver and this is where the title comes in. as you probably guessed already I simply fail to install it, I tried multiple times and each time I do i'm being granted with an "Application Install : Install Package Failure" error massage, I tried to look up the problem and I sure doesn't seem to be alone, there are many people with this problem, but unfortunately everyone has their own solutions that doesn't seem to work for me, the most recommanded solutions I found usually saying that the intel graphics card is some how in the way of the installation and that it's the cause of the problem, I sew at least 1 or 2 people recommending to delete the Intel graphics drivers first, but i'm preaty sure that it isn't the best idea and that it can possibly cause my screen to go black, but you know what, maybe you can help me with this because I don't even know anymore