Dell Technical Update Service

No sound from headphones

Check the headphone cable connection — Ensure that the headphone cable is securely inserted into the headphone connector. See the Setup and Quick Reference Guide for your computer at support.dell.com.

Adjust the Windows volume control — Click or double-click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up and that the sound is not muted.

Video and Display Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer.

NOTICE: If your computer came with a PCI graphics card installed, removal of the card is not necessary when installing additional graphics cards; however, the card is required for troubleshooting purposes. If you remove the card, store it in a safe and secure location. For information about your graphics card, go to support.dell.com.

Check the diagnostic lights —

See Diagnostic Lights.

Check the display settings —

See the Dell™ Technology Guide on your computer or at support.dell.com.

Adjust the Windows display settings —

Windows XP:

1.Click Start→ Control Panel→ Appearance and Themes.

2.Click the area you want to change or click the Display icon.

3.Try different settings for Color quality and Screen resolution.

Windows Vista:

1.Click Start → Control Panel→ Hardware and Sound→ Personalization→ Display Settings.

2.Adjust Resolution and Colors settings, as needed.

Only part of the display is readable

Connect an external monitor —

1.Shut down your computer and connect an external monitor to the computer.

2.Turn on the computer and the monitor and adjust the monitor brightness and contrast controls.

If the external monitor works, the computer display or video controller may be defective. Contact Dell Support.

The Dell Technical Update service provides proactive e-mail notification of software and hardware updates for your computer. The service is free and can be customized for content, format, and how frequently you receive notifications.

To enroll for the Dell Technical Update service, go to support.dell.com.

Dell Support Utility

The Dell Support Utility is installed on your computer and available from the Dell Support, , icon on the taskbar or from the Start button. Use this support

E6400 ATG, E6400 specifications

The Dell Latitude E6400 and E6400 ATG are part of the renowned Latitude series from Dell, designed specifically for business professionals who require durability, portability, and performance. Launched in the late 2000s, these laptops have been popular choices among users seeking reliable devices that can withstand everyday rigors.

The Dell E6400 stands out for its robust design and is built to last, featuring a magnesium alloy chassis and a reinforced palm rest. This model is equipped with a 14.1-inch display that offers resolution options including HD and WXGA, making it suitable for various tasks, from spreadsheets to presentations. The screen's anti-glare coating ensures visibility in different lighting conditions, enhancing user experience during prolonged usage.

Powering the E6400 is Intel’s Core 2 Duo processor, providing substantial performance for multitasking and business applications. It supports up to 8GB of RAM, allowing users to run multiple applications seamlessly. The laptop also incorporates a range of storage options, accommodating HDDs or SSDs, which contributes to faster boot times and application launch speeds.

On the connectivity front, the E6400 offers several ports including USB 2.0, an HDMI port, and an Ethernet port, making it versatile for both local and remote work. An optional docking station enhances expansion possibilities, turning it into a powerful workstation.

The E6400 ATG, or All-Terrain Grade, is designed for more demanding environments. It features a rugged exterior, meeting military specifications (MIL-STD-810F) for durability against shocks, drops, and extreme temperatures. The laptop is sealed to protect from dust and moisture, making it an excellent choice for workers in construction, field services, or any outdoor profession.

In terms of power efficiency, both models boast outstanding battery life, often lasting up to 8 hours on a single charge, depending on usage and configuration. The inclusion of Trusted Platform Module (TPM) and optional biometric fingerprint readers enhances security, ensuring sensitive business data remains protected.

Overall, the Dell Latitude E6400 and E6400 ATG balance performance and robustness, making them ideal for professionals on the go and those who require a rigorous workhorse in challenging environments. These models reflect Dell's commitment to quality and innovation in the business laptop segment, catering to a wide array of user needs.