Dell OptiPlex 745 - Manual (Page 14)

1. Follow the procedures in Before You Begin .
2. Locate the 2-pin password jumper (PSWD) on the system board, and remove the jumper to clear the password. See Jumper Settings .
3. Replace the computer cover (see Replacing the Computer Cover ).
4. Connect your computer and monitor to electrical outlets, and turn them on.
5. After the Microsoft® Windows® desktop appears on your computer, shut down your computer (see Turning Off Your Computer ).
6. Turn off the monitor and disconnect it from the electrical outlet.
7. Disconnect the computer power cable from the electrical outlet, and press the power button to ground the system board.
8. Open the computer cover.
9. Locate the 2-pin password jumper on the system board and attach the jumper to reenable the password feature.
10. Replace the computer cover (see Replacing the Computer Cover ).
11. Connect your computer and devices to electrical outlets, and turn them on.
12. Assign a new system and/or administrator password.
Clearing CMOS Settings
1. Follow the procedures in Before You Begin .
2. Reset the current CMOS settings:
a. Locate the password (PSWD) and CMOS (RTC_RST) jumpers on the system board (see Jumper Settings ).
b. Remove the password jumper plug from its pins.
c. Place the password jumper plug on the RTC_RST pins and wait approximately 5 seconds.
d. Remove the jumper plug from the RTC_RST pins and place it back on the password pins.
3. Replace the computer cover (see Replacing the Computer Cover ).
4. Connect your computer and devices to electrical outlets, and turn them on.
Hyper-Threading and Dual-Core Technology
Hyper-Threading is an Intel® technology that can enhance overall computer performance by allowing one physical processor to function as two logical
processors, capable of performing certain tasks simultaneously. Dual-Core is an Intel technology in which two physical computational units exist inside a single
CPU package, thereby increasing computing efficiency and multi-tasking ability. It is recommended that you use the Microsoft® Windows® XP Service Pack 1
(SP1) or higher operating system because Windows XP is optimized to take advantage of Hyper-Threading technology.
While many programs can benefit from Hyper-Threading and dual-core technology, some programs may have not been optimized for them and may require an
update from the software manufacturer. Contact the software manufacturer for updates and information about using Hyper-Threading or dual-core technology
with your software. To determine if your computer is using Hyper-Threading technology, check the system setup option for Hyper-Threading under the
Performance tab (see
System Setup ).
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
NOTICE: This process erases both the system and administrator passwords.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
NOTE: This procedure enables the password feature. When you enter system setup (see Entering System Setup ), both system and administrator
password options appear as Not Set—meaning that the password feature is enabled but no password is assigned.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.