Ram help!!!!

mart_8703 · 07-16-2009, 02:48 AM

Hi,

Ive got 64Bit Vista installed and im trying to upgrade my RAM to 4GB, i did a search on crucial uk, and bought 2x4GB PC2 6400 RAM that said was compatible.

However when i come to install them my computer no longer recognises my graphics card, Error - System could not allocate enough resources to my PCI Express Root Port(Code 12).

If i go below 4GB everything works fine my GPU etc.

Why is this happening and how do i fix it. Ive already updated my BIOS, my nvidia GPU has the latest drivers. I did a PSU calculator and it suggested i only needed 350Watt PSU.

My Computer... http://support.packardbell.com/uk/it...&pn=pb80128501

Quad 2 Core Q6660 2.4GHz
Denver 10 Mobo
Nvidia 8600GT 512
425Watt PSU
3GB RAM

Thanks for your help.

**Tyree** · 07-16-2009, 07:41 AM

What type and speed was the previous RAM that was originally installed in the PC?

mart_8703 · 07-16-2009, 07:50 AM

PC2-5300 667Mhz, the new RAM is 800MHz.

**Tyree** · 07-17-2009, 08:01 AM

OK, are you certain that Mobo will accept DDR2800 (PC6400) RAM?
I've looked around and I can't find any specs for that Mobo but i have found a lot of problems similar to (adding RAM causes graphics problems) yours.

**Tyree** · 07-17-2009, 08:02 AM

OK, are you certain that Mobo will accept DDR2800 (PC6400) RAM?
I've looked around and I can't find any specs for that Mobo.

mart_8703 · 07-17-2009, 08:19 AM

This is my mobo... http://support.packardbell.com/uk/it...ppn=pb80128501

**Tyree** · 07-17-2009, 08:46 AM

OK, I "finally" located some specs for that Mobo. It's made by ECS (not good) it uses Nvidia chipsets (not good with an Intel CPU).
It does say it supports DDR2800RAM.
Do you have the latest Nvidia drivers installed for the 8600GT.
Try running one stick of RAM at a time.

mart_8703 · 07-17-2009, 08:49 AM

Tried that already and each stick worked seperatly, look at my other post.... RAM Problems HELP!!

**Tyree** · 07-17-2009, 10:02 AM

PLEASE refrain from posting about the same problem in more than one thread/post. It causes confusion and makes the task of giving you reliable help that much more difficult.
At this point, my best guess, ECS Mobo + Nvidia chipsets + HyperX RAM=problems. Add the Hiper PSU for future problems.
My best advice, at this point, would be to reread the last two posts (#6 & 7) in the other thread.
RAM Problems HELP!!

mart_8703 · 07-17-2009, 12:00 PM

I already have done what they suggested in previous posts. This post says ive bought RAM from CRUCIAL and it still doesnt work.

The only advice you have given is that my whole system quite simply SHOULD'NT be working anyway.

Stu_computer · 07-17-2009, 07:57 PM

hello mart. suggest you mark other thread solved (you did buy the crucial).

generally, the operating system installs itself at top of ram (in the penthouse), the legacy hardware and all software live at the bottom (ground floor) and pci/pcie/video graphics will occupy the middle section.

bios and windows os then store the information about these locations, irq, etcetera, resources into nvram (also known as cmos escd) and a battery backup is used to retain this information on shutdowns. so, when the pc boots this data is used by bios and then the os to quickly allocate these resources again.

now when you add ram that changes the locations (ie: the penthouse was on 20th floor has now moved up to the 40th floor, pci/video moves from 10 to 20th floor). also, because more ram is available pci might grab a bigger chunk of it.

a good bios will detect that the ram amount has changed and update the nvram, thus forcing a rebuild of the data table. unfortunately, some bios don't do this automatically--hence the nvram data table is incorrect (corrupt) when read by bios and the os which results in errors, freezes, etc...

it's often necessary to force the nvram to be rebuilt. a simple way is to reset cmos, (or remove battery etc..). another is to go into bios setup and load defaults-n-save/exit. some bios include a 'reset escd' or similar setting which is the best method.

so i suggest you try 'load defaults-n-save/exit' and then power off immediately. then install the new ram. also, temporarily disconnect all usb devices (except kybrd and mouse).

07-16-2009, 02:48 AM	#1 (permalink)
mart_8703 Registered User Join Date: Nov 2008 Location: England Posts: 23 OS: Vista Premium	Ram help!!!! Hi, Ive got 64Bit Vista installed and im trying to upgrade my RAM to 4GB, i did a search on crucial uk, and bought 2x4GB PC2 6400 RAM that said was compatible. However when i come to install them my computer no longer recognises my graphics card, Error - System could not allocate enough resources to my PCI Express Root Port(Code 12). If i go below 4GB everything works fine my GPU etc. Why is this happening and how do i fix it. Ive already updated my BIOS, my nvidia GPU has the latest drivers. I did a PSU calculator and it suggested i only needed 350Watt PSU. My Computer... http://support.packardbell.com/uk/it...&pn=pb80128501 Quad 2 Core Q6660 2.4GHz Denver 10 Mobo Nvidia 8600GT 512 425Watt PSU 3GB RAM Thanks for your help.

07-16-2009, 07:41 AM	#2 (permalink)
Tyree Mentor Hardware Team Join Date: May 2009 Location: Illinois Posts: 5,444 OS: XP Pro-7RC-Mandriva My System	Re: Ram help!!!! What type and speed was the previous RAM that was originally installed in the PC? __________________ Posting your PC specs will help us to help you quicker and more efficiently.

07-16-2009, 07:50 AM	#3 (permalink)
mart_8703 Registered User Join Date: Nov 2008 Location: England Posts: 23 OS: Vista Premium	Re: Ram help!!!! PC2-5300 667Mhz, the new RAM is 800MHz. Last edited by mart_8703; 07-16-2009 at 08:04 AM.

07-17-2009, 08:01 AM	#4 (permalink)
Tyree Mentor Hardware Team Join Date: May 2009 Location: Illinois Posts: 5,444 OS: XP Pro-7RC-Mandriva My System	Re: Ram help!!!! OK, are you certain that Mobo will accept DDR2800 (PC6400) RAM? I've looked around and I can't find any specs for that Mobo but i have found a lot of problems similar to (adding RAM causes graphics problems) yours. __________________ Posting your PC specs will help us to help you quicker and more efficiently.

07-17-2009, 08:02 AM	#5 (permalink)
Tyree Mentor Hardware Team Join Date: May 2009 Location: Illinois Posts: 5,444 OS: XP Pro-7RC-Mandriva My System	Re: Ram help!!!! OK, are you certain that Mobo will accept DDR2800 (PC6400) RAM? I've looked around and I can't find any specs for that Mobo. __________________ Posting your PC specs will help us to help you quicker and more efficiently.

07-17-2009, 08:19 AM	#6 (permalink)
mart_8703 Registered User Join Date: Nov 2008 Location: England Posts: 23 OS: Vista Premium	Re: Ram help!!!! This is my mobo... http://support.packardbell.com/uk/it...ppn=pb80128501

07-17-2009, 08:46 AM	#7 (permalink)
Tyree Mentor Hardware Team Join Date: May 2009 Location: Illinois Posts: 5,444 OS: XP Pro-7RC-Mandriva My System	Re: Ram help!!!! OK, I "finally" located some specs for that Mobo. It's made by ECS (not good) it uses Nvidia chipsets (not good with an Intel CPU). It does say it supports DDR2800RAM. Do you have the latest Nvidia drivers installed for the 8600GT. Try running one stick of RAM at a time. __________________ Posting your PC specs will help us to help you quicker and more efficiently.

07-17-2009, 08:49 AM	#8 (permalink)
mart_8703 Registered User Join Date: Nov 2008 Location: England Posts: 23 OS: Vista Premium	Re: Ram help!!!! Tried that already and each stick worked seperatly, look at my other post.... RAM Problems HELP!!

07-17-2009, 10:02 AM	#9 (permalink)
Tyree Mentor Hardware Team Join Date: May 2009 Location: Illinois Posts: 5,444 OS: XP Pro-7RC-Mandriva My System	Re: Ram help!!!! PLEASE refrain from posting about the same problem in more than one thread/post. It causes confusion and makes the task of giving you reliable help that much more difficult. At this point, my best guess, ECS Mobo + Nvidia chipsets + HyperX RAM=problems. Add the Hiper PSU for future problems. My best advice, at this point, would be to reread the last two posts (#6 & 7) in the other thread. RAM Problems HELP!! __________________ Posting your PC specs will help us to help you quicker and more efficiently.

07-17-2009, 12:00 PM	#10 (permalink)
mart_8703 Registered User Join Date: Nov 2008 Location: England Posts: 23 OS: Vista Premium	Re: Ram help!!!! I already have done what they suggested in previous posts. This post says ive bought RAM from CRUCIAL and it still doesnt work. The only advice you have given is that my whole system quite simply SHOULD'NT be working anyway.

07-17-2009, 07:57 PM	#11 (permalink)
Stu_computer Tech Hardware Team Join Date: Jul 2005 Posts: 1,459 OS: Windows	Re: Ram help!!!! hello mart. suggest you mark other thread solved (you did buy the crucial). generally, the operating system installs itself at top of ram (in the penthouse), the legacy hardware and all software live at the bottom (ground floor) and pci/pcie/video graphics will occupy the middle section. bios and windows os then store the information about these locations, irq, etcetera, resources into nvram (also known as cmos escd) and a battery backup is used to retain this information on shutdowns. so, when the pc boots this data is used by bios and then the os to quickly allocate these resources again. now when you add ram that changes the locations (ie: the penthouse was on 20th floor has now moved up to the 40th floor, pci/video moves from 10 to 20th floor). also, because more ram is available pci might grab a bigger chunk of it. a good bios will detect that the ram amount has changed and update the nvram, thus forcing a rebuild of the data table. unfortunately, some bios don't do this automatically--hence the nvram data table is incorrect (corrupt) when read by bios and the os which results in errors, freezes, etc... it's often necessary to force the nvram to be rebuilt. a simple way is to reset cmos, (or remove battery etc..). another is to go into bios setup and load defaults-n-save/exit. some bios include a 'reset escd' or similar setting which is the best method. so i suggest you try 'load defaults-n-save/exit' and then power off immediately. then install the new ram. also, temporarily disconnect all usb devices (except kybrd and mouse). __________________