Lenovo support is the best I've ever dealt with a computer company, and trust me, I've dealt with most of the major computer companies including HP, Dell, Acer, ASUS, and Toshiba. Now this issue that I had with the Lenovo C340 was simple. The display stopped working, and it would display random colors. However, everything else works since I could connect it to the TV, and there would be no problem.
This is the picture that I posted to Facebook that day, with caption "Sister's Lenovo C340 Display stopped working =(" Well, in short, I contacted support, and got this thing sorted out, shipped to their repair center, got it back, and now, this computer works just like it did before! Plus, they even cleaned up the tape that was on the side of the computer. This is the reason why I love Lenovo. They stand by their products, and they make them extremely well. And, for 3 years, this is the only issue this computer has had, and Lenovo satisfied me greatly.