启用数字 模 式 — 如果 CD 驱动器以模拟模式运行,则扬声器将不起作用。

1.单击“Start”(开始 )按钮,单击“Control Panel”( 控 制 面 板 ),然后单击“Sounds, Speech, and Audio Devices”(声音 、语音 和 音频 设 备)

2.单击“Sounds and Audio Devices”(声音 和 音频 设 备)

3.单击“Hardware”( 硬 件 )选项卡。

4.双击 CD 驱动器的名称。

5.单击“Properties”(属性 )选项卡

6.选取“Enable digital CD audio for this CD-ROM device”(为此 C D-ROM 设 备 启用数字 CD 音频)框。

消 除 可 能的 干扰 — 关闭附近的风扇、荧光灯或卤素灯以检查是否存在干扰。

运行扬声器诊断程 序

重 新 安装音频 驱 动程 序 — 请参阅重新安装驱动程序和公用程序

检查设 备 选 项 设置 — 进入系统设置程序(请参阅系统设置程序),确保将“Integrated Devices”( 集 成设 备)选项下的“Sound”(声音 )设置为“O n” (开)(如果采用集成音频解决方案)或“Off”(关)(如果采用扩充卡解决方案)。退出系统设置程序并重新启动计算机。

运行 Dell 诊断程 序 — 请参阅 Dell 诊断程序

检查软件 和 硬 件冲突 — 请参阅软件与硬件不兼容的问题

耳 机没有声音

检查耳 机电 缆的连接 — 确保已将耳机电缆稳固地插入耳机连接器。请参阅计算机概览

调 节 Windows 音 量 控 制 — 单击或双击屏幕右下角的扬声器图标。确保音量已经调高并且声音没有被静音。

视频和显示器问题

请在完成以下各项检查时填写诊断程序核对表

警 告 :开始执行 本节中 的 任 何步骤之 前 ,请 阅 读并遵 循《产品 信 息 指 南》中 的 安 全说明 。

如 果屏幕为黑屏

注 :有关故障排除步骤,请参阅显示器说明文件。

检查显示 器电 缆的连接 —

如果您购买了图形卡,请确保显示器已连接至图形卡。

确保已正确连接显示器(请参阅计算机附带的《 快 速参考 指 南 》)。

如果使用图形延长电缆,并且拔下该电缆可以解决问题,则延长电缆有故障。

交换计算机和显示器的电源电缆,以确定电源电缆是否有故障。

检查连接器的插针是否弯曲或折断。(显示器电缆连接器通常都有缺失的插针。)

检查显示 器电源 指 示灯 — 如果电源指示灯不亮,请按下按钮以确保显示器已打开电源。如果电源指示灯亮起或闪烁,则表明显示器有电。如果电源指示灯闪烁,请按 键盘上的任意键或移动鼠标。

检 测 电源插座 — 使用其它设备(例如台灯)检测电源插座,确保电源插座能够正常工作。

检 测 显示 器 — 将可以正常工作的显示器连接至计算机,并尝试使用该显示器。如果新的显示器工作正常,则原来的显示器有故障。

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Dell 490 manual 视频和显示器问题, 机没有声音, 果屏幕为黑屏

490 specifications

The Dell PowerEdge 490 is a versatile and robust server designed to meet the demands of small to medium-sized enterprises. This server combines powerful performance with advanced features, making it suitable for various applications, from data storage to running critical applications.

One of the standout features of the Dell 490 is its support for dual Intel Xeon processors. The Xeon architecture provides exceptional processing power, enabling the server to handle complex tasks and multiple workloads simultaneously. This dual-processor capability is essential for businesses that require high availability and performance in their server operations.

The PowerEdge 490 supports up to 32 GB of DDR2 SDRAM, allowing for efficient multitasking and improved data access speed. The server's memory capacity ensures that it can support applications that require substantial RAM, which is increasingly important in today's data-driven environments.

Storage options are another highlight of the Dell 490. It features multiple drive bays that can support SAS, SATA, or SCSI hard drives, allowing businesses to customize their storage solutions based on their specific needs. The server supports a variety of RAID configurations, including RAID 0, 1, 5, and 10, providing options for data redundancy and performance optimization.

In terms of connectivity, the Dell PowerEdge 490 is equipped with several PCI Express slots, enabling the addition of various expansion cards for enhanced functionality. Whether it’s improved networking capabilities or graphics processing, the options for customization are plentiful. This adaptability ensures that the server can evolve alongside the organization’s growing needs.

The Dell 490 also incorporates advanced energy-efficient technologies, such as power management features designed to optimize energy consumption. This not only reduces operational costs but also makes it a more environmentally friendly option for businesses concerned about their carbon footprint.

In summary, the Dell PowerEdge 490 is a reliable server that boasts a combination of powerful processing capabilities, flexible storage options, and expandability. With its energy-efficient design and robust features, it remains an excellent choice for businesses looking to enhance their IT infrastructure while ensuring performance and adaptability for the future.