These laptops seemed quite useless to me because the Lcd screens do not resize when working in less than native resolution. Where similar laptops often have a "Stretch" setting in the Bios to rectify this problem, these HP's do not. The "Stretch" problem also remains when running XP & 2000 without the correct drivers.

Using the ati 6.2 drivers for 98se also does not resolve the problem.

The 1st discovery was this driver: https://archive.org/details/ati-igp-340-m-driver-windows-9x
When installed on 98se, the screen resolutions worked perfectly.

Next...

The 2nd discovery was finding that when I used the Shut down option "Restart in MS-DOS mode"
(BootGui=0 & Logo=0 changed earlier in msdos.sys) the dos screen was now full size, and whatever
I did, like run DJ Delories VBE Plasma demo, the screen always returned to dos in full size. So the "fix" is very
robust, the only way I found to revert the old size was to reboot.

I now spent a few days reading about how to remove TSR's from memory, in the hope of getting back
to a clean dos, with the win.com removed from memory, when I made the 3rd discovery.

When I tried the "old trick" of removing the Logow.sys & Logos.sys files in the c:\windows directory
and then used the Shut down option "Shut down" it actually did shut down to dos cleanly. ("This is the first time I've actually seen this happen")
and needless to say the dos screen was still robustly full size.

Although these laptops are very power hungry, they do respond well acpi control, dropping down to 30w & (23w with the screen off) in xp
and 25.6w in Dos with Fdapm.exe installed.