Check the keyboard cable — Shut down the computer. Disconnect the keyboard cable and check it for damage, and firmly reconnect the cable.

If you are using a keyboard extension cable, disconnect it and connect the keyboard directly to the computer.

Check the external keyboard —

1.Shut down the computer, wait 1 minute, and turn it on again.

2.Verify that the numbers, capitals, and scroll lock lights on the keyboard blink during the boot routine.

3.From the Windows desktop, click StartAll ProgramsAccessoriesNotepad.

4.Type some characters on the external keyboard and verify that they appear on the display.

If you cannot verify these steps, you may have a defective external keyboard.

To verify that the problem is with the external keyboard, check the integrated keyboard —

1.Shut down the computer.

2.Disconnect the external keyboard.

3.Turn on the computer.

4.From the Windows desktop, click StartAll ProgramsAccessoriesNotepad.

5.Type some characters on the internal keyboard and verify that they appear on the display.

If the characters appear now but did not with the external keyboard, you may have a defective external keyboard. Contact Dell (see Contacting Dell).

Run the keyboard diagnostics tests — Run the PC-AT Compatible Keyboards tests in the Dell Diagnostics (see Dell Diagnostics). If the tests indicate a defective external keyboard, contact Dell (see Contacting Dell).

Unexpected characters

Disable the numeric keypad — Press <Num Lk> to disable the numeric keypad if numbers are displayed instead of letters. Verify that the numbers lock light is not lit.

Lockups and Software Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

The computer does not start up

Ensure that the AC adapter is firmly connected to the computer and to the electrical outlet.

The computer stops responding

NOTICE: You might lose data if you are unable to perform an operating system shutdown.

Turn the computer off — If you are unable to get a response by pressing a key on your keyboard or moving your mouse, press and hold the power button for at least 8 to 10 seconds until the computer turns off. Then restart your computer.

A program stops responding or crashes repeatedly

NOTE: Software usually includes installation instructions in its documentation or on a floppy disk or CD.

End the program —

1.Press <Ctrl><Shift><Esc> simultaneously.

2.Click Task Manager.

3.Click Applications.

4.Click the program that is no longer responding.

5.Click End Task.

Check the software documentation — If necessary, uninstall and then reinstall the program.

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Dell D520 Lockups and Software Problems, Unexpected characters, Computer does not start up, Computer stops responding

D520 specifications

The Dell D520 is a robust and reliable laptop that was introduced as part of Dell's Latitude series, catering primarily to business professionals and enterprises. Known for its solid build and practical features, the D520 emphasizes productivity and durability in a mobile computing environment.

One of the standout features of the Dell D520 is its comfortable keyboard layout. The full-sized, spill-resistant keyboard offers a tactile feel, making it ideal for extended typing sessions. Additionally, the touchpad is responsive, enhancing ease of navigation while on the go. The laptop's design prioritizes ease of use, ensuring that users can work efficiently, whether in an office or while traveling.

In terms of hardware, the Dell D520 typically features Intel processors, which provide a balanced mix of performance and power efficiency. This enables users to run multiple applications without significant lag, making it suitable for multitasking. The laptop is also equipped with a decent amount of RAM, ensuring smooth performance for standard business applications and tasks.

The D520 includes various connectivity options, crucial for modern-day professionals. It typically comes with several USB ports, an Ethernet port, and a VGA port for connecting to external displays. There is also the option for Wi-Fi connectivity, allowing users to connect to networks effortlessly.

One of the key characteristics of the Dell D520 is its durability. The laptop is designed to withstand the rigors of daily use and features a sturdy chassis that can handle rough treatment. This durability makes it a favorite among users who need a reliable machine that can endure a busy workday.

The D520 also emphasizes security features that are essential for business users. It includes options for fingerprint readers and smart card readers, allowing users to enhance data protection. This level of security is particularly valuable for professionals handling sensitive information.

Battery life is another important aspect of the Dell D520. With an efficient power management system, users can expect a reasonable battery performance that allows for extended work sessions without needing to recharge frequently.

Overall, the Dell D520 combines practicality, durability, and efficiency, making it an excellent choice for business professionals who require a reliable laptop for everyday tasks. Its balance of features and performance continues to make it a suitable option for users who prioritize functionality and dependability in their computing devices.