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B-18 Dell Dimension 900 System Reference and Troubleshooting Guide
Disabling a Forgotten Password
If you forget your user or supervisor password, you will be unable to operate your sys-
tem or change settings in the system setup program, respectively, until you disable
the existing password(s). Disabling the password(s) involves removing the computer
cover and changing a jumper setting (twice) on the system board.
NOTE: You disable both supervisor and user passwords at the same time.
To disable a forgotten password, perform the following steps:
1. Turn off the computer and unplug it from the electrical outlet.
2. Remove the computer cover according to the instructions in “Removing and
Replacing the Computer Cover” found in Chapter 2.
3. Remove the riser-board bracket according to the instructions in “Removing and
Replacing the Riser-Board Bracket” found in Chapter 2.
4. Remove all expansion cards according to the instructions in “Removing Expan-
sion Cards” found in Chapter 2.
Graphics Aperture
Size
Sets the graphics aperture size to 4, 8, 16, 32, 64, 128, or
256 MB.
Plug and Play OS Set to Ye s (default) to allow the operating system to handle
all Plug and Play operation. Set to No to allow the BIOS to
handle the Plug and Play operation.
Reset Resource
Assignments
Set to No (default) to retain ESCD data. Set to Yes to clear
ESCD data.
Restore On AC/
Power Loss
Determines the system mode of operation after an AC
power failure. The selections are Power On, (default), Stays
Off, and Last State.
Remote Wake Up Set to Enabled (default) to activate remote Wakeup On LAN
mode. Set to Disabled to deactivate it.
RTC Alarm Determines the time and date for the RTC alarm function to
resume. The selections are Time, Date, Time/Date, and
Disabled (default). If set to Time, Date, or Time/Date, you
can set the following additional options:
Resume Day Sets the day for the RTC alarm function to resume. The
selections are 1 (default) through 31.
Resume Time Sets the hour/minute/second for the RTC alarm function to
resume. The selections are 00 (default) to 59 for each field.
Table B-13. PnP/PCI Options Screen Submenu Options (continued)
Option Function
NOTE: The Glossary in the system Help defines abbreviations and acronyms.