Dell Optiplex-620 User Guide - Page 13

2. Reset the current CMOS settings: a. Locate the password (PSWD) and CMOS (RTC_RST) jumpers on the system board. 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. 4. Attach the computer stand, if used. NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer. 5. Connect your computer and devices to electrical outlets, and turn them on. Hyper-Threading 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. 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 HyperThreading, some programs have not been optimized for Hyper-Threading and may require an update from the software manufacturer. Contact the software manufacturer for updates and information about using Hyper-Threading with your software. To determine if your computer is using Hyper-Threading technology: 1. Click the Start button, right-click My Computer, and then click Properties. 2. Click Hardware and click Device Manager. 3. In the Device Manager window, click the plus (+) sign next to the processor type. If Hyper- Threading is enabled, the processor is listed twice. You can enable or disable Hyper-Threading through system setup. Power Management Your computer can be set to use less power when you are not working. You control the power usage through the operating system installed on your computer and certain option settings in system setup. These periods of reduced power are called "sleep modes." NOTE: All components installed in the computer must support the hibernate and/or standby mode feature(s) and have the appropriate drivers loaded to enter either of these sleep modes. For more information, see the manufacturer's documentation for each component. l Standby. In this sleep mode, power is reduced or turned off for most components, including the cooling fans. However, system memory remains active. l Hibernate. This sleep mode reduces power consumption to a minimum by writing all data in system memory to a hard drive and then removing system power. Waking up from this mode restarts the computer, and the memory contents are restored. Operation then resumes where the computer left off when it entered the hibernation mode. l Shutdown. This sleep mode removes all power from the computer except a small auxiliary amount. As long as the computer remains connected to an electrical outlet, it can be automatically or remotely started. For example, the Auto Power On option in system setup allows the computer to automatically start at a specified time. Also, your network administrator can remotely start your computer using a power management event such as Remote Wake Up. The following table lists the sleep modes and the methods you can use to wake the computer from each mode. Sleep Mode Wake-Up Methods (Windows XP) Standby l Press the power button l Auto power on l Move or click the mouse l Type on the keyboard l USB device activity l Power management event Hibernate l Press the power button l Auto power on l Power management event Shutdown l Press the power button l Auto power on l Power management event