Assessments - 3, GPA: 4 ( )

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If Hyper-Threading is enabled, the processor is listed twice. You can enable or disable Hyper-Threading through system setup. For more information on accessing system setup, see "System Setup" on page 131. For more information on Hyper- Threading, search the Knowledge Base on the Dell website at support.dell.com. PCI Express Cards PCI Express is the next generation technology for graphics cards and PCI cards. The PCI Express x16 slot is used in place of the AGP graphics card slot. The dimensions of PCI Express card slots are different from those of the PCI card slots, and the cards are not interchangeable (you cannot install a PCI card in a PCI Express card slot, or a PCI Express card in a PCI card slot). Some benefits of PCI Express technology include: • Greater available bandwidth — PCI Express bus bandwidth is 250 MB/s in each direction per lane simultaneously, while PCI bus bandwidth is 133 MB/s in one direction at a time. • Prioritization of service — Multiple PCI cards installed in a computer all share a common bus, but each PCI Express card operates on its own channel. Activities such as video conferencing and web camera functions can be automatically prioritized through the device software to reduce latency. Optimizing Performance dell.com | support.dell.com NVIDIA SLI Dual Graphics Technology With NVIDIA SLI (Scalable Link Interface) dual-graphics technology, an optional second PCI Express graphics card will significantly increase graphics performance on your computer. Benefits of this technology can be seen in the improved portrayal of the 3-D graphics used in gaming and design applications. Each graphics card includes a GPU (graphics processing unit). The two GPUs dynamically share their workload to provide the best possible performance. For a given application, the SLI software selects the optimum rendering (processing) mode. The two most basic modes are split frame rendering and alternate frame rendering. In split frame rendering, the GPUs divide the work; each GPU renders part of every frame that displays. In the alternate frame rendering mode, each GPU alternately renders the full-screen image. For more information, see the documentation that came with your graphics card. 38 Optimizing Performance Solving Problems Troubleshooting Tips Follow these tips when you troubleshoot your computer: • If you added or removed a part before the problem started, review the installation procedures and ensure that the part is correctly installed. • If a peripheral device does not work, ensure that the device is properly connected. • If an error message appears on the screen, write down the exact message. This message may help technical support personnel diagnose and fix the problem(s). If an error message occurs in a program, see the program’s documentation. Battery Problems CAUTION: There is a danger of a new battery exploding if it is incorrectly installed. Replace the battery only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions. CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. R EPLACE THE BATTERY — If you have to repeatedly reset time and date information after turning on the computer, or if an incorrect time or date displays during start-up, replace the battery (see "Replacing the Battery" on page 124). If the battery still does not work properly, contact Dell (see "Contacting Dell" on page 142). Drive Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. Solving Problems dell.com | support.dell.com ENSURE THAT M ICROSOFT ® W INDOWS ® RECOGNIZES THE DRIVE — Click the Start button and click My Computer. If the floppy, CD, or DVD drive, is not listed, perform a full scan with your antivirus software to check for and remove viruses. Viruses can sometimes prevent Windows from recognizing the drive. TEST THE DRIVE — • Insert another floppy disk, CD, or DVD to eliminate the possibility that the original one is defective. • Insert a bootable floppy disk and restart the computer. C LEAN THE DRIVE OR DISK — See "Cleaning Your Computer" on page 139. C HECK THE CABLE CONNECTIONS R UN THE H ARDWARE TROUBLESHOOTER — See "Resolving Software and Hardware Incompatibilities" on page 64. R UN THE D ELL D IAGNOSTICS — See "Dell Diagnostics" on page 58. CD and DVD drive problems NOTE: High-speed CD or DVD drive vibration is normal and may cause noise, which does not indicate a defect in the drive or the CD or DVD. NOTE: Because of different regions worldwide and different disc formats, not all DVD titles work in all DVD drives. A DJUST THE W INDOWS VOLUME CONTROL — • Click the speaker icon in the lower-right corner of your screen. • Ensure that the volume is turned up by clicking the slidebar and dragging it up. • Ensure that the sound is not muted b...

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