pretty much, we can only do so much but when it comes down to hardware we can't help. We can offer suggestions on where the problem may lie, and what can be tried to pinpoint the fault
Your issue is far to say from normal. With these kind of issues, it's fair to say it's beyond our capability to get it fixed on the spot, it's the same as many other cases on this forum.
Interesting, I would get this checked out -
The wires coming from the screen that is connected to your laptop hardware. If an external display works it only gives this conclusion - it is either the screen itself or what is used to connect to the screen.
I wouldn't have recommended the screen to begin with, as what the engineer replaced.
Also - What happens if you try using an external monitor?
This has worked for some people - Hold down power button on startup until laptop turns off. Take out the battery and put it back in. I know this sounds...
Both the MSI GE70 and Lenovo are best choices of the list, and can certainly do what you require. Before I go giving you other options do you prefer 16GB Ram?
Laptops direct I have never used, but as from user experience from the site, reliable.
http://ark.intel.com/products/75459/
Yes they forgot to put the "(3M Cache, up to 2.60 GHz)",(which is turbo speed) there is no 4200u with no boost CPU speed.
plug the speakers into the playstation, if you do it through the monitor it may convert the audio into stereo, making it only 2.1 channel and no surround.