We introduced a desktop computer with a LEGO computer case several years ago, but if you want to know how to build your own computer with , the following from the same artist should be more suitable for you.
Mike Schropp, a senior LEGO fan built the incredible desktop computer with lots of LEGO bricks. The unique computer measures 7.5 x 7.5 x 5.5 inches, and as we can see from the images, it looks a bit like a LEGO storage box, but the steady box built with LEGO bricks are designed for computer hardware including Intel Core i3/i5/i7 processor, 8GB/16GB RAM, SSD/HDD, ASUS Q87 Mini-ITX motherboard, and DVD/CD combo. Moreover, using high-performance fans and smartly designed case, the computer delivers high airflow for a stable and secure operating environment. Mike has released detailed steps of making the desktop. You may find inspirations from the following images, and you can also directly contact Mike to order a LEGO computer.