I don't understand "the computer stack". Plug it in and restart holding down the "Shift key". Plug into a hard wired ethernet internet connection and see if it resets automatically. If this fails, start up from you system installation disk and run Disk Utilities.

Are you going into the bios to set these things? With XP you press F2 while booting up to open bios. The time and date are right there as first. Set them up and exit with F10.

If things are still screwed up: open "start", click "run, type in "restore" (no quotes), follow instructions.

Tom W.

I have this same problem, so I got around it by checking the option in the date and time settings to automatically update both through the Internet. I attach my ethernet cable and voila!

If your able to change the date & time within the System Pref and it appeared to be altered to the new date & time in the finder. But, when you shutdown, removed the battery and restarted the system and the date & time reverted back. Your backup battery is dead on the main logic bd.

Newer systems use a capacitor to hold the settings when you pull your battery and use the main battery the rest of the time in the case of laptops.

Using update date & time over the Internet is also workable until you disconnect.

You need to buy a PRAM battery and replace your old one (located inside on top of the DVD drive) if your date/time settings keep getting messed up after you power off.