It only took me about 4 hours. Most of it was spent doing tedious things like trying to get the motherboard screws to align with the motherboard and getting the dagnabbin’ default motherboard I/O template and the new one in. So to replace my 1.5 Ghz 1 GB RAM dell that died, I now have a 3 Ghz 2 GB Ram Eric Mesa computer. Really my only complaint in the whole process is that the Asus motherboard holes didn’t line up with the Aspire X-Navigator Holes so it’s not as securely fastened as I would have liked.