What are the best practices for troubleshooting a computer with no display?

2 Check the monitor

The next step is to check if your monitor is working properly. Make sure that the monitor is turned on, and that the brightness and contrast settings are not too low. You can also try using a different monitor cable or port, or connecting your monitor to another device, such as a laptop or a TV. If your monitor works with another device, but not with your computer, the problem is likely with your computer's hardware or software. If your monitor does not work with any device, you may need to repair or replace it.

4 Check the RAM

RAM, or random access memory, is a hardware component that can affect your computer's display. It stores and accesses data temporarily while running programs and applications. If your RAM is faulty, insufficient, or incompatible, your computer may not boot up or display anything on the monitor. To troubleshoot this issue, you can try removing and reseating your RAM, running a memory test, or using a different RAM. To remove and reseat your RAM, turn off the computer, unplug it from the power source, open the case, and carefully remove and reinsert your RAM modules. You can use the Windows Memory Diagnostic tool in Windows or the Apple Diagnostics tool in Mac OS to run a memory test. For a more comprehensive memory test, you can use a third-party program such as MemTest86. If the memory test reveals any problems with your RAM, you may need to replace it with a new or compatible one. Check your motherboard's manual or website for specifications and compatibility of your RAM. Alternatively, consult a professional computer repair service for advice and assistance.

5 Check the BIOS settings

BIOS, or basic input/output system, is a software program that controls the basic functions and settings of your computer's hardware. If the BIOS settings are incorrect or corrupted, your computer may not be able to boot up or display anything on the monitor. To troubleshoot this issue, you can try resetting your BIOS to default settings. To do this, you need to access the BIOS setup menu by pressing a specific key, such as F2, F10, or Del, during the startup process. Then navigate to the Exit tab and select Load Setup Defaults or Load Optimized Defaults, and save and exit the BIOS. Alternatively, you can update your BIOS firmware. You can download the latest version from your motherboard's manufacturer website and follow the instructions on how to install it. Another option is to use a utility program like BIOSAgentPlus to scan and update your firmware automatically.

6 Check the operating system

If your computer has no display, it could be due to a problem with your operating system. Your operating system is the software that manages and coordinates the activities and resources of your computer. To troubleshoot this issue, you can try booting your computer in safe mode by pressing a specific key, such as F8 or F12, during the startup process. If this doesn't work, you may need to repair or reinstall your operating system using a recovery disk or bootable USB drive. Troubleshooting a computer with no display can be difficult, but by following these steps and backing up your data before attempting any hardware or software changes, you can hopefully restore your computer's display.

7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?