I might know the answer already but just put together my first shuttle pc using the following: Shuttle SG41J1 Plus Silver XPC Barebone for SKT775 Intel CPUs Intel Pentium Dual Core E6600 Socket 775 3.06GHz 1066FSB 2MB Cache Retail Boxed Processor 1 x Corsair 4GB DDR3 1333MHz Memory Module CL9(9-9-9-24) 1.5V Unbuffered Non-ECC 320gb Samsung Sata HDD from old computer. Getting no display on the monitor when I turn it on. Power seems fine as the case and processor fans are working. Initially I had the whole thing together but have since removed the HDD so it's just processor and memory plugged in. Have tried reseating the memory into both available slots and also reseating the CPU and fan with no joy. My guess is that it's down to the memory. The Supported list is here http://uk.shuttle.com/products/productsSupportList?productId=1383 and the 4gb Cosair is not listed. Not got a spare stick to try at the moment. Should i just pick up a stick of Kingston KVR1333D3N9/4G which seems to be the cheapest one on the support list. Thanks.