Issue with increasing RAM Jolson72 5/4/2007 5:53:01 AM Recently I built a computer and purchased Windows Vista. I'm running the 64 bit version. To start with I had 1 GB of PC2 - 6400 RAM. My mother board has 4 slots for RAM and is expandable up to 8GB of RAM. So I went ahead and purchased 4GB (2 x 2GB) of the same type of RAM to upgrade my memory go 5GB. However When I put in all 5GB of RAM windows will act like it's booting up but then the screen will shut off but the computer will still be running. If I take out the 1GB and just leave the 4GB of new RAM it still won't work. If I take out one of the 2GB sticks of RAM and leave in the 1GB and the 2 GB for a total of 3GB's of RAM then windows will work fine. For whatever reason windows will only allow me to use 3GB's of RAM, nothing more. I was under the impression that Windows Vista x64 could handle more RAM then that? Any thoughts or ideas about what might be going on? Thanks, Jason

Re: Issue with increasing RAM "Colin Barnhorst" <colinbarharst[ at ]msn.com> 5/4/2007 6:56:19 AM Check for a BIOS update. I have a similar issue on an Asus board. I can run 3GB but not 4GB or more. "Jolson72" <Jolson72[ at ]discussions.microsoft.com> wrote in message news:8C756988-1F62-4AF4-A421-7555ECC92A6F[ at ]microsoft.com... [Quoted Text] > Recently I built a computer and purchased Windows Vista. I'm running the > 64 > bit version. To start with I had 1 GB of PC2 - 6400 RAM. My mother board > has 4 slots for RAM and is expandable up to 8GB of RAM. So I went ahead > and > purchased 4GB (2 x 2GB) of the same type of RAM to upgrade my memory go > 5GB. > However When I put in all 5GB of RAM windows will act like it's booting up > but then the screen will shut off but the computer will still be running. > If > I take out the 1GB and just leave the 4GB of new RAM it still won't work. > If > I take out one of the 2GB sticks of RAM and leave in the 1GB and the 2 GB > for > a total of 3GB's of RAM then windows will work fine. For whatever reason > windows will only allow me to use 3GB's of RAM, nothing more. I was under > the impression that Windows Vista x64 could handle more RAM then that? > Any > thoughts or ideas about what might be going on? > > Thanks, > > Jason

Re: Issue with increasing RAM Howiepoohs 5/4/2007 9:25:00 AM I have a similar issue, 4gb will not run effectivly, eg, areo stalls and crashes as do games. I think the issue is related to Vista as the issue is not present when I dual boot into XP 64. I have found by using my 4*1 gb ram sticks and telling Vista I have less memory ( max is 3.25 gb) in system config and advanced boot options, I am able to boot and get no stalls and reasonable performance. Hopefully MS will release a fix for the issue. "Colin Barnhorst" wrote: [Quoted Text] > Check for a BIOS update. I have a similar issue on an Asus board. I can > run 3GB but not 4GB or more. > > "Jolson72" <Jolson72[ at ]discussions.microsoft.com> wrote in message > news:8C756988-1F62-4AF4-A421-7555ECC92A6F[ at ]microsoft.com... > > Recently I built a computer and purchased Windows Vista. I'm running the > > 64 > > bit version. To start with I had 1 GB of PC2 - 6400 RAM. My mother board > > has 4 slots for RAM and is expandable up to 8GB of RAM. So I went ahead > > and > > purchased 4GB (2 x 2GB) of the same type of RAM to upgrade my memory go > > 5GB. > > However When I put in all 5GB of RAM windows will act like it's booting up > > but then the screen will shut off but the computer will still be running. > > If > > I take out the 1GB and just leave the 4GB of new RAM it still won't work. > > If > > I take out one of the 2GB sticks of RAM and leave in the 1GB and the 2 GB > > for > > a total of 3GB's of RAM then windows will work fine. For whatever reason > > windows will only allow me to use 3GB's of RAM, nothing more. I was under > > the impression that Windows Vista x64 could handle more RAM then that? > > Any > > thoughts or ideas about what might be going on? > > > > Thanks, > > > > Jason >

Re: Issue with increasing RAM Feliks Dzerzhinsky <fdzerzhinsky[ at ]kgb.su> 5/6/2007 3:51:27 AM -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Howiepoohs wrote: [Quoted Text] > I have a similar issue, 4gb will not run effectivly, eg, areo stalls and > crashes as do games. I think the issue is related to Vista as the issue is > not present when I dual boot into XP 64. I have found by using my 4*1 gb ram > sticks and telling Vista I have less memory ( max is 3.25 gb) in system > config and advanced boot options, I am able to boot and get no stalls and > reasonable performance. Hopefully MS will release a fix for the issue. > I'm running 4GB with an ASUS board and Vista Ultimate 64 bit with no problem whatever. - -- Iron Feliks -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGPVC/IEgejQPpTu4RCjn6AJ4s0/i5pbS8rGxwYxwaDNAFfBeJVwCfdU+S baYPkDF3b7lVhuX9zn1B98k= =e3lM -----END PGP SIGNATURE-----

Re: Issue with increasing RAM Carol Steele 5/8/2007 9:39:19 AM Check your BIOS - some motherboards need to have the North Bridge configuration changed (happens with Asus P5B boards definitely and others possibly). There is a setting called Memory Remap Feature in the North Bridge section - this must be enabled for 64-bit OS's and should allow you to see all the memory which you have installed. "Colin Barnhorst" wrote: [Quoted Text] > Check for a BIOS update. I have a similar issue on an Asus board. I can > run 3GB but not 4GB or more. > > "Jolson72" <Jolson72[ at ]discussions.microsoft.com> wrote in message > news:8C756988-1F62-4AF4-A421-7555ECC92A6F[ at ]microsoft.com... > > Recently I built a computer and purchased Windows Vista. I'm running the > > 64 > > bit version. To start with I had 1 GB of PC2 - 6400 RAM. My mother board > > has 4 slots for RAM and is expandable up to 8GB of RAM. So I went ahead > > and > > purchased 4GB (2 x 2GB) of the same type of RAM to upgrade my memory go > > 5GB. > > However When I put in all 5GB of RAM windows will act like it's booting up > > but then the screen will shut off but the computer will still be running. > > If > > I take out the 1GB and just leave the 4GB of new RAM it still won't work. > > If > > I take out one of the 2GB sticks of RAM and leave in the 1GB and the 2 GB > > for > > a total of 3GB's of RAM then windows will work fine. For whatever reason > > windows will only allow me to use 3GB's of RAM, nothing more. I was under > > the impression that Windows Vista x64 could handle more RAM then that? > > Any > > thoughts or ideas about what might be going on? > > > > Thanks, > > > > Jason >