As I've posted previously and as others have also. Using a laptop LCD for a desktop monitor can be accomplished but the particulars will be different from one LCD manufacturers model to another just because the wiring is usually different, however the process is the same. And as for reasons, there are more than one. If you try to replace a sony motherboard it will cost you nearly as much as a new laptop, however, some repair facilities do a great job at a reasonable price. Then again it is not necessarily economical to spend several hundred dollars on repairing a laptop only worth a couple hundred when you can buy a nice refurb for a few hundred and get a warranty. So to put a 14" working LCD on a 3GHz desktop is far superior economically to trying to repair an old 233MHz system that will probably have another failure. If you are adventurous there are ways of finding laptop screen wiring diagrams and if you are kind enough to ask courteously I'll search my archive for free as long as anyone who makes a request can be patient.