I just recently bought 1gb of pc4200 DDR2 ram from the egg. I have a ECS P4M800Pro-M v1.0A. I removed the old DDR ram because you can't use DDR and DDR2 at the same time and just put in the new 1gb stick. I booted and on the black boot up screen it detected only 512mb of DDR2. It went into windows xp with no other problems though. I went into the system properties and it also only detects 512mb of ram. I then ran CPUZ and PC WIZARD 2008 and those programs detected the full stick. I can still do everything i did before but i was hoping for some performance increases with 1gb. My problem is that only half of the ram is detected. Does anyone know how to fix this problem? I have updated the bios once but the latest update from ECS would no update. I have also tried the other slot but i get the same result.
Specs:
Window XP
ECS P4M800Pro-M v1.0A mobo
Kingston ValueRAM 1GB 240-Pin DDR2 SDRAM DDR2 533 (PC2 4200)
30gb harddrive
ATI 9200se
http://www.newegg.com/Product/Product.aspx?Item=N82E16820144151&Tpk=KVR533D2N4%2f1G
http://www.ecsusa.com/ECSWebSite/Products/ProductsDetail.aspx?DetailID=574&CategoryID=1&DetailName=Feature&MenuID=44&LanID=9
Specs:
Window XP
ECS P4M800Pro-M v1.0A mobo
Kingston ValueRAM 1GB 240-Pin DDR2 SDRAM DDR2 533 (PC2 4200)
30gb harddrive
ATI 9200se
http://www.newegg.com/Product/Product.aspx?Item=N82E16820144151&Tpk=KVR533D2N4%2f1G
http://www.ecsusa.com/ECSWebSite/Products/ProductsDetail.aspx?DetailID=574&CategoryID=1&DetailName=Feature&MenuID=44&LanID=9