User manual DELL OPTIPLEX 990 SERVICE MANUAL

[. . . ] Dell OptiPlex 990 Small Form Factor Service Manual Regulatory Model D03S Regulatory Type D03S001 Notes, Cautions, and Warnings NOTE: A NOTE indicates important information that helps you make better use of your computer. CAUTION: A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. Information in this publication is subject to change without notice. Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc. [. . . ] By default, the drive will not have a password set • • • Strong Password Password Configuration Enter the old password Enter the new password Confirm new password Allows you to enable or disable various on-board devices. Enable PCI Slot — This option is enabled by default. This field enforces strong passwords. These fields control the minimum and maximum number of characters allowed for Admin and System passwords. • • • Admin Password Min Admin Password Max System Password Min 60 Security • Password Bypass System Password Max Allows you to bypass the System (Boot) Password and the internal HDD password prompts during a system restart. • • Disabled — Always prompt for the system and internal HDD password when they are set. Reboot Bypass — Bypass the password prompts on Restarts (warm boots). NOTE: The system will always prompt for the system and internal HDD passwords when powered on from the off state (a cold boot). Also, the system will always prompt for passwords on any module bay HDDs that may be present. Password Change Allows you to determine whether changes to the System and Hard Disk passwords are permitted when an administrator password is set. Allow Non-Admin Password Changes — This option is enabled by default. Non-Admin Setup Changes This option lets you determine whether changes to the setup option are permitted when an administrator password is set. Allow Wireless Switch Changes — This option is disabled by default. TPM Security This option lets you control whether the Trusted Platform Module (TPM) in the system is enabled and visible to the operating system. NOTE: Activation, deactivation, and clear options are not affected if you load the setup program's default values. Changes to this option take effect immediately. Computrace This field lets you Activate or Disable the BIOS module interface of the optional Computrace Service from Absolute Software. • • • Deactivate — This option is disabled by default. Disable Activate 61 Security Chassis Intrusion Allows you to enable or disable the chassis intrusion feature. You can set this option to: • • • • CPU XD Support OROM Keyboard Access Clear Intrusion Warning — Enabled by default if chassis intrusion is detected. Disable Enable On-Silent — Enabled by default if chassis intrusion is detected. Allows you to enable or disable he execute disable mode of the processor. Allows you to determine whether you access the Option ROM Configuration screens via hotkeys during boot. Specifically, these settings are capable of preventing access to Intel RAID (CTRL+I) or Intel Management Engine BIOS Extension (CTRL +P/F12) • • • Enable — User may enter OROM configuration screens via the hotkey. One-Time Enable — User may enter OROM configuration screens via the hotkeys on next boot only. Disable — User may not enter OROM configuration screens via the hotkey. This option is set to Enable by default. Admin Setup Lockout Allows you to enable or disable the option to enter Setup when an Admin password is set. This option is not set by default. Performance Multi Core Support This field specifies whether the process will have one or all cores enabled. [. . . ] When your computer finishes booting, immediately back up your data and replace your hard drive (for installation procedures, see "Adding and Removing Parts" for your computer type). If no replacement drive is immediately available and the drive is not the only bootable drive, enter System Setup and change the appropriate drive setting to None. Then remove the drive from the computer. Write fault Description The operating system cannot write to the floppy or hard drive. 86 Write fault on selected drive Description The operating system cannot write to the floppy or hard drive. X:\ is not accessible. The device is not ready Description The floppy drive cannot read the disk. [. . . ]