I can't see that as being a 'hardware issue' everything reads the ram correctly except Vista 圆4 in normal mode. Also I can view all 4gb in Safe Mode, to run in normal mode I need to set max ram at 3gb. My MB Bios has been set to ACPI 2.0 from the word GO. to ACPI V2.0ĭont set ACPI v3.0 if you have windows Xp 32bit in DUAL BOOT.īut you can set it to ACPI v2.0 for both in dual boot. You can simly go to bios and in power managementt, set the ACPI ver. Has anyone tried a clean install with all 4 GB installed? Or is this just an issue when you upgrade to 4 GB? My board is the Intel DG965WH with the latest BIOS and there is no option to change which version of ACPI is being used (as far as I'm aware my board is ACPI 2.0a compliant). No way to change which ACPI is being used like Shantanu Kaushik suggested. Got all the latest updates too including giving the KB929777 update a go to no avail. So here I am in the same boat with 3326 MB reported in Windows after changing the Msconfig setting. Reboot into Safe Mode and is all good with all 4GB reported. The Windows loading bar moving with the hard disk ocassionally making a noise. I left it running for at least 10 minutes at one stage and it was at the same point as I left it. My system after upgrading to 4GB just wouldn't boot to Windows. Also since I recently installed Vista 64 so I thought I'd give it more memory to play around with since it was suppose to make use of it all!

Good to see I'm not alone! I just ran into this exact same problem after I decided to take advantage of the recent drop in RAM prices and upgrade from 2GB to 4GB.

Hp dmi tool fails to create ram drive