Gigabyte GA-7N400 Pro2 looked like a real good MOBO. But it did not boot!!!!!! CPU AMD 2600+ Centon 512MB DDR 400 Nvidia Gforce 5200 Ultra 430 True Blue PSU So when it did not boot I thought either the MOBO or CPU was bad and I got another new CPU and got the MOBO exchanged. Did not boot again! I read a post at Hardcoreware about GA-7N400 Pro2 compatible only with a limited set of Memory modules. This could be the reason? I will try a brand of DDR Memory from that list Gigabyte site does not have any such info I could find. List :- << PC3200 / DDR400 Samsung M368L3223 CL3 512MB double side K4H560838D-TCC4 Samsung M368L3223 CL3 256MB single side K4H560838D-TCC4 Winbond W 9451GBDB-5 CL 2.5 512 double side W942508BH-5 TwinMos W9451GBDB-5 CL2.5 256MB single side W942508BH-5 Kingston KVR400x64 C25/256 CL2.5 256MB single side W942508BH-5 Corsair CMX 512-3200C 2xMS3202v 1.1 CL2.5512MB double side Corsair XMS CMX256A-3200C2 XMS3202v1.1 double side Corsair CMX512-3200LLPT XMS3205v1.1 ( twinX ) Kingston Model/size KVR266X64C25/128 128MB 266MHz DDR PC2100 KVR333X64C25/128 128MB 333MHz DDR PC2700 KVR266X64C25/256 256MB 266MHz DDR PC2100 KVR333X64C25/256 256MB 333MHz DDR PC2700 KVR400X64C25/256 256MB 400MHz DDR PC3200 KVR266X64C25/512 512MB 266MHz DDR PC2100 KVR333X64C25/512 512MB 333MHz DDR PC2700 KVR400X64C25/512 512MB 400MHz DDR PC3200 KHX3500/512 512MB 434MHz DDR PC3500 KVR266X64C25/1G 1GB 266MHz DDR PC2100 KVR333X64C25/1G 1GB 333MHz DDR PC2700 Corsair Size/Model 256MB CMX256A-3500C2 DDR PC3500 256MB CMX256A-3200C2 DDR PC3200 512MB CMX256A-3200C2 DDR PC3200 512MB CMX512-3200LLPT DDR PC3200 512MB CMX512-3200LL DDR PC3200 >>

it did not boot? what do you mean by it?? it did not POST or can't get into windows anyway this sounds like a psu issue any corsair ram/kingston should be compatible with your mobo