It is said and I am sure it was in PCA That no matter which laptop brand you buy it will have been built by one of about half a dozen builders in Tiawan. The only diiference if the badge. It is sa highly specialized market.
The giant Taiwanese laptop builders make the machines and provide them to the likes of Dell, Hewlett Packard, Acer, etc., for them to assemble using their own cases and badges. It is, as jack says, a highly specialised business, and nobody is going to build you a laptop from scratch. Plenty of companies will provide you with a machine that is specified by you from a list of variables, but that's a different thing.
There are plenty of retailers that will let you specify the components, such as processor speed, graphics, optical drive, hard drive size etc, i have used these in the past, click here With no problems. All manufacturers use one of about four "chassis" and then add their own spec components.
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