Everyone has their favorite brand when it comes to laptops. They chose that brand because they had bad experience with other brands.
What I mad this thread for is that I want everyone to post what bad experience they had with some brands.

I'll go first..
HP: Very hard to disassemble , has LOTS of screws, runs very hot,batteries die quickly, made only for looks.
Toshiba: A good brand but I have noticed that most of their laptops have power button / power jack/ AC/DC Adapter and Graphics card problems (If it's dedicated)
Acer: I like Acer because it's a very good brand for someone who has a small budget. However, Acer's have very weird problems, like the webcam or sound suddenly stop working, or the screen gets scrambled from time to time for no reason.
Lenovo: Overall a very good brand for the price and quality. I have noticed that the CPU fan doesn't turn on until the CPU get to very high temps. But the fan always keeps it cool when it get's hot so it not that much of big deal.The build quality of the product depends on how much it costs. For example my netbook costs 300~ ish and the keyboard keys sometimes get stiffened and I have to re-seat them for it to become normal again. But when you buy a Lenovo that costs 600~700$ you'll notice a solid body.
Asus: I don't have a lot of experience with Asus laptops, but I find them cheaply build when it comes to budget models (Like Lenovo as said above).
Dell: I love this brand. They are very easy to repair, run very cool, have good performance , everything is top notch except for the battery lasting less every time you charge it and eventually die.
Gigabyte : No experience.
Sony VAIO : I find these good , but they feel above average , and most importantly they are very expensive. But a very good brand overall.
Apple: I have no experience of this brand , but I find them not safe to store my data because they come so thin that the HDD's always get damaged.
Fujitsu: I stay away from this brand. They run very hot, the power jacks break very easily, keyboards are uncomfortable and break easily.
Samsung: Same as Acer. But I find Samsung to have hardware problems more often than Acer.
Compaq:Same as HP
Packard-bell: Very good brand, but it looks and feels very cheap.
MSI:Runs hot, VERY hard to fix, power-jack problems.
Alienware: Nice for gaming, but spare parts are almost impossible to find. Same as Dell overall.

So what experience have you guys had ? :)