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jam's post, the one referenced at the link in response 7, is the best explanation I've seen of the situation with this particular onboard video.
The usual situation with onboard video is you are able to adjust the amount of ram that is shared with the onboard video, somewhere in the bios,
Or - sometimes that's auto determined by the bios, and can't be changed by the user, depending on how much ram you have installed. You're never supposed to share more than half of your installed ram with the onboard video, but in this case, since you have 2gb of ram, I would think either
- you could set the amount of ram shared with the onboard video to it's maximum
- or - it would be auto set to it's maximum.
In either case, I do not see how the amount of ram shared with the onboard video could be different, if the total installed ram amount is the same, with different operating systems if the bios auto determines that , or if settings you make in the bios determine that - there is no way I know of that the bios can "know" which operating system it is that you are using, unless there is a setting regarding that in the bios that you can deliberately change.
It's possible software that is installed along with the specific video drivers for the onboard video has some setting where you can set the amount of ram shared with the onboard video, and the default setting amount can be different depending on the software version, but I DO NOT recall EVER seeing that on ANY computer that I have worked on.
(However, with some brand name system original software installations, you can access the bios settings with a brand name supplied program in Windows, as well as, or instead of, while booting.)
Since the problem you guys are having seems to occur when Vista or Windows 7 is installed from scratch, it's quite possible you get this situation because the video software was NOT installed properly.
One thing that is very important is that you install the video software the right way.
(If you are updating "drivers", usually you MUST Un-install the previous "drivers" FIRST.)
Sound and video "drivers" always have associated files that must be installed properly along with the actual drivers. If you install only the actual drivers, it's likely the device will NOT work properly.
Unless the instructions for installing a device tell you otherwise....
(this ALWAYS applies to video and sound adapters )
You DO NOT install drivers for a device while booting into Windows, if the software for the device has not been installed yet - when Windows detects a generic device or New Hardware while booting, you allow it to search for drivers, it doesn't find any, and it wants you to show it the location of the drivers - CANCEL that, continue on to the desktop, and install the software for the device using the proper installation from a CD or the proper installation file that you downloaded from the web.
The same applies no matter when Windows finds New Hardware !
If you DID install drivers that way,
(The following also applies if you want to un-install previous software, or re-install the same software)
- for video "drivers"....
- go to Control Panel - Programs and Features - and Un-install the software you installed, reboot, DO NOT install drivers while booting, let the desktop screen fully load.
Install the video software properly by running the proper download you got from the web, or if you have the CD that came with the video card that's in a slot, or if you have the CD that came with the brand name computer that has the Drivers on it, run the video software installation from the installation program on that.
Whenever you load Windows from a regular Windows CD (or DVD) from scratch, after Setup is finished you must load the drivers for the mboard, particularly the main chipset drivers, in order for Windows to have the proper drivers for and information about your mboard hardware, including it's AGP or PCI-E, ACPI, USB 2.0 if it has it, and hard drive controller support. If you have a generic system and have the CD that came with the mboard, all the necessary drivers are on it. If you load drivers from the web, brand name system builders and mboard makers often DO NOT have the main chipset drivers listed in the downloads for your model - in that case you must go to the maker of the main chipset's web site, get the drivers, and load them.