nvidia's technical response is here:
First, download the file below:
Unzip the files contents. You will need to run the utility in pure DOS (means you will need to create a DOS boot disk and boot off of the DOS boot disk). Add "device=himem.sys" in config.sys and load smartdrv.exe in autoexec.bat in the DOS boot disk or else the boot disk will take a long time to load. Type "msd.exe" to start the program. Then press TAB and left arrow key to "System Information" and press ENTER. Press PAGE DOWN key and you will see the Item 2. "Memory Information", in the bottom of this item you can see "Physical memory cache status". That's the MTRR setting for your system. If you see A0000~D0000 is uncacheable, that mean that the motherboard BIOS does not have MTRR enabled and is likely the cause of the slow POST issue.
Motherboard is Asus V3-P5V900 with BIOS 1001 (i.e. the latest)
Card is Asus EN210 512M (GeForce 210) with VBIOS 70.18.2d.00.00
Anyone else also having this issue with an ASUS G210/GT220, please contact us at OC_Support@asus.com
-ASUS Support Team