Windows XP forum: 640x480 forever! | : (

Our offices have many Lenovo computers, 2004 vintage, no model name shown anywhere. The original driver disc is long lost, but for all but one of these, Windows XP finds built-in drivers that just work. Here is my chronology for the Bad Box that doesn't just work:
When everything was fine but I simply needed more drive space, I replaced the hard drive with a freshly formatted one. It wouldn't boot to the XP CD because of missing files (boot.ini, NTLDR, etc.). For those who have never been in this mess, let me assure you, it shows "Booting from CD" on the screen, along with "Missing NTLDR" even after BIOS reset and removing the battery for two minutes, so there's really no alternative except to put the files that the box wants on the drive. To do this, I put the blank drive in one of the other Lenovo boxes (identical hardware in every way) and used XXClone to make a bootable clone of that other drive, put it back in my Lenovo and it booted fine, video looked great. I noticed that this system had never been updated and was running the original flavor of XP (confirmed in the properties of "My Computer"), so I downloaded Service Pack 2 and installed it. On restart, the video was 640x480 and 4bit. Thanks, Microsoft. I looked at the other box to find it was using driver "VGASave" (!), the same as mine. First Q: How the heck can a computer set video perfectly easily to 1024x768 at 32bit when the video driver is "VGASave"?

Using a free download called "Unknown Device Identifier", I found the video hardware to be "82845G/GL/GE", so I downloaded the driver from DriverGuide.com. It installed fine, but made only a small improvement: it is set for 640x480 at 32bit and will not change. I have tried removing the Display Adapter in Device Manager several times, removing the "Intel Grpahics" whatever in Add/Remove Programs and reinstalling several times, but no change. I even downloaded Service Pack 3 and installed it, still no change, even with more reinstalls of the driver. Second Q: What's next?