Hello and Welcome to the Webroot Community Forums!

Could you please tell us more about your problem?

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Depending on the type of desk top, and the problem, you may or may not be able to fix it.  At a certain point it is no longer worth the investment unless you just love your old desk top computer.   What are your plans?   You may be better off buying a kit and building from scratch if you just want the satisfaction of building a system.  You may or may not be able to use old parts. 

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