I have worked in IT for a while and I can tell you that fixing laptops
is normally not considered a good idea for novices, or even fairly
experienced people. (That said, it wouldn't surprise me if there are
people on this list who built their own laptop, so never say never... !)
..
However personally I don't have a personal laptop for this very reason.
I want something that I am able to troubleshoot and fix.
Laptops to me are a black box..... I once watched somebody put in
additional RAM in a work laptop that I had. That was straightforward.
But other than that I think it is fairly unusual for the majority of
(even) fairly technical people to play around with laptops. I am in
software though, not hardware.
If you have no previous hardware experience it seems like a risky
undertaking. You'd also forfeit the warranty which might apply if it is
found that there is a genuine hardware malfunction.
Be very careful so you don't make the problem worse!
Hopefully somebody else can give you more useful advice.
If I was in your shoes, I'd do one of the following:
1) Go back to where I bought the laptop and say that I'd followed the
manual to the letter and was appalled at this obvious component
malfunction.... Politely demand that they sort it out.
2) Check the vendor's forums and support pages, or search for people who
have experienced the same problem with the same model. See what they
did. Then take it from there (Sometimes with technical things as you
know, there is a super-easy fix (once you know what it is.. )
Good luck!
Johanna