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I was trying to take apart my laptop to replace the DC jack for it, and the screw inside of the casing was very hard to remove, so after messing with it for about 15 minutes, the plus sign (or the head) was erased and became more of a circular square. Is there any way to take it out without breaking anything?

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Try a flat blade screwdriver. There may be enough for the blade to grip, allowing you to remove the screw. –  joeqwerty May 23 at 23:54

3 Answers 3

Since the screw was stuck in the socket to begin with, these might not be too successful, but you can try using a rubber band over the screwdriver tip to grip the stripped head of the screw:

http://lifehacker.com/5462520/remove-a-stripped-screw-with-a-rubber-band

There are some other tips at Lifehacker, but a lot of these seem to be geared toward larger screws:

http://lifehacker.com/5901738/how-to-remove-screws-with-stripped-heads

There are kits you can get to drill out stripped screws at hardware stores.

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If you have a cutting wheel for a small rotary tool, cut a flat blade notch into the outer part of the screw then you can use a flat bladed screwdriver. If you're careful, you'll only ruin the screw and not the plastic of the case. The screw is stuffed anyway so there's no harm is making it worse.

enter image description here

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Chances are the OP can get a flat blade screwdriver to grip the head without cutting, drilling or grinding. I've used a flat blade screwdriver to remove Phillips head screws with stripped heads many times. –  joeqwerty May 24 at 0:49
    
@joeqwerty That's true. But depending on how stripped the screw is, I've found that sometimes you need to create an edge for the screwdriver to bite on. Especially if the screw is tight. –  SLaG May 24 at 5:06

To supplement the other techniques suggested here, I've found that spraying the screw with a refrigerant can be a slight aid to reduce the force necessary to turn the screw. It worked for me when trying to unrack a server, though I'm not certain that the chilling effect would be localized enough for something as small as a laptop screw.

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Just a little off-topic, but what would happen if I would get it in contact with skin? –  Vlad Bondarenko May 24 at 1:46
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@VladBondarenko Curiously, the warnings on the back of my can say nothing about skin contact; it's more concerned about deliberate and direct inhalation. You would have to spray a lot to do noticeable damage, and it also evaporates quite quickly. –  200_success May 24 at 1:57

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