As stated a little more about your laptop especially model # etc would be helpful.
I've replaced many hinges in my time, and they can vary from model to model.
And what ricknick says is true...just all depends...
here's a link to ebay "Compaq Presario hinges"
http://shop.ebay.com/?_from=R40&_trksid=m38.l1313&_nkw=Compaq+presario+hinges&_sacat=See-All-CategoriesAgain a model # would be helpful to find the EXACT hinge you need.
http://repair4laptop.org/notebook_lcd_display.htmlhttp://repair4laptop.org/disassembly_compaq.htmlThis site above has some GOOD walkthru's for SOME compaq presario hinge replacements. I LOVE this site. they have repair documentation for many different laptops!