I have a Dell Latitude CPx notebook that has been running Windows 98 for a few years. I just upgraded to Windows 2000 (by reformatting the hard drive and loading Windows 2000 from scratch). Windows 2000 is working just fine.
My problem is this:
Under Windows 98, when I closed the lid of the notebook and then opened it, the screen would come back up to my desktop just as it was, without me doing anything. Under Windows 2000, when I close the lid and then open it, I get a black screen and nothing I do (hit keys, move mouse, etc) can make the desktop come back up. I have to power it down (by holding the power switch down for several seconds) and power it back on, which (sometimes) then goes through the whole scan disk thing.
I have Windows 2000 SP 4; all updates have been installed.
Dell BIOS is A14
Memory is 512Mbytes
In Control Panel / Power Options ... Advanced Tab ... "When I close the lid of my portable computer" is set to "None" (this is the same setting as on another Dell Latitude that I have, with Windows 2000, and that one works just fine with respect to the close lid/open lid thing).
In Device Manager, under "System Devices", there is "APCI Lid" ... (same as on the pc that works ok, and both pc's have the same version driver).
In the BIOS Setup, "Power Management" was "Enabled" and "Display Close" was "Active" for when the pc is powered by AC (which it is). Now ... THIS WAS DIFFERENT from the setting on the pc that works ok. On the pc that works ok, "Power Management" was "Disabled", and "Display Close" (when on A/C) was "Suspend".
So I changed the settings to match those on the pc that works ok.
This seemed to fix the problem ... but only ONCE! I closed the lid, then opened it ... and the desktop came back up. I closed the lid again and never got the desktop to come back up (black screen problem .. had to power off). After rebooting, I checked all the settings and tried again ... closed the lid ...opened it ... black screen again.
And once again, this all worked fine under Windows 98.
I'm baffled! ;-(