I sometimes don't consider advice at all when the circumstances are wrong. It clouds my thinking.
I don't have much of an opinion on whether OP's advice is good or bad because I refuse to consider it, and instead only consider the complaint for what it's worth to me (not much, since I live in the mainland United States).
No. It just means that we need to decide for ourselves what to do with information we hear about a company. I can't avoid every company people have said negative things about to me in person, and I certainly can't avoid every company that I've read bad things about on the Internet.
The result is that I generally throw out anecdotes like yours, no matter where I hear them (including from immediate family members), and instead read reviews.
In fact I sometimes even throw out my own opinions in favor of something more objective. I was severely wronged by T-mobile, and a year later, signed back up with them, and it's been great.
I was with you until I saw this comment. If everything you've stated is true, why not keep what you have up and just add an update to how Toshiba fixed your laptop?
It would take a lot more than this to get me to avoid a company as large as Toshiba.