Well, the GTX 645 is really good for what you need it, and much more... I don't know about the Intel 3000/4000 HD, I haven't heard the best, but since you will have a GTX, if you can disable the Intel HD and work with the GTX you will be fine...
It is probably a Windows problem and you might need to reinstall the operating system. If you provide some more information I might be able to help. Did you change anything before it started doing that? Did you download anything and ran it? Do you have an antivirus installed and updated?
Well, League of Legends is not such a heavy game. It needs at least 3Ghz CPU and 4GB RAM are recommended so any laptop at the price of ~550-600$ I think would be ok. But you have to look at the graphics cards, it needs something like NVIDIA 8800, but I can't really recommend anything since there...
Hello,
I have a samsung laptop with 6520g (on-board with a6-3420m) and the 6470m you have... I have been looking into that and the answer is no, the 6470m gpu is not useless. It is actually pretty good, if you get it working... Windows use the integrated graphics card (a.k.a 6520g or in your...