Hello, I'm Jewel with Kingston Technical Support. The part number KVR16N11S8/4 is a high density 4GB module. The DH55PJ motherboard does not support this memory since it it high density and low profile. The problem described is what occurs since the system thinks it can use the 4GB modules and then when it tries to fully communicate with the memory when Windows is loading it cannot and causes the system to crash. If you can find the discontinued PN KVR1333D3N9H/4G or KVR1333D3N9HK2/8G they will work in this system. Our currently manufactured memory is supported in Intel systems with 6-series chipsets and later. We are here to help and can always advised on the compatible parts with your system. You can also check our Memory Search, here: http://www.kingston.com/us/memory/search/options/ . If you system is not listed it would no longer be supported by our memory but you can go to the "Discontinued Models Search" to see older discontinued parts that were compatible with the system. For any further assistance, please call us at 1-800-435-0640 (USA and Canada only) M - F 6am - 6pm PT and I or another available Technician will assist you.
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