here is the story of my day off: (you can pass to the read here section, this introductory) My audio jack was giving me some troubles, so i got annoyed and slapped the surface of the laptop. It was not a hard one, so I expected nothing will happen. However, my laptop didn't think so and gave me a white screen. It was obviously a graphics card or led screen related problem. So I connected it via HDMI to my TV and saw that it was working properly. My bet was the connector of screen must be pulled out somehow. By the way, my laptop is still in warranty period but it would take more than 10 days for them to fix my computer and I cannot accept that since I work on my computer to earn my life and they wouldn't me a spare for the repairing period. So, I disassembled it.
While disassembling my laptop, I damaged a power cable (I suppose, it was red&black) cable which connects to the mainboard and to led screen or upper part the bottom surface (indicator leds, power button, volume buttons, wireless button, bluetooth button, backup buttons), it didn't wore off totally but if it would fail, I wouldn't be surprised. And, I reassembled the laptop, put it back on and I had a SMART failure: "Harddisk failure is imminent." I am backing my data up right now and probably going to but a new hard drive.
BUT, I am pretty sure I did not damaged or made something wrong except the cable thing. So I cannot be sure if I buy a new one and it wouldn't fail too.
The disk has a very slow performance right now, esp. for the access times.
What can I do to find the defect? And is my warranty void now? because I did not remove any "warranty void if seal is removed" seals, because there wasn't one.