The computer restarts, and then a screen Whatsapp displays with a list of options you can enable or disable. Gently press down on the outside edges of cards and memory modules that are inserted into the motherboard to better seat them. Note each cable location if you do not already know where it connects.
Remove all memory cards, USB flash drives, and CDs/DVDs from the computer, turn off the computer, and then open the computer case. If the monitor does not work on another computer, the monitor may be defective. Connect the original monitor and change the display resolution to match the default setting for the monitor. For help on how to adjust the display resolution, see Connecting a Monitor, Projector, or TV .
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If the monitor is still blank, continue to the next step. If you had to straighten any pins, reconnect the monitor making sure that the video cable is firmly connected and then turn on the computer and monitor. Inspect the video cable and video connectors for damage. Check for sharp bends or breaks in the cable, or bent or broken pins at the connectors.
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- If you think a new application might be to blame, get rid of that too.
- Common faults include a broken power supply unit, incorrectly-fitted components and a faulty motherboard.
- If you installed any new hardware recently, try uninstalling its drivers from Safe Mode.
For instructions to factory reset your computer, erasing all personal data and restoring the original settings, see How to Reset Your Computer to Factory Settings . iPad models equipped with Face ID should press and release volume-up, then volume-down, and then hold down the top button. Some features of the tool may not be available at this time. We apologize for this inconvenience and are addressing the issue.
Some monitors do not have on-screen messages but instead use the lights to indicate no signal. Use the following steps to see if a built-in on-screen message is displayed. If you can hear the computer fan spinning and see lights on the computer, the problem is probably caused by the video cable connection or the monitor.
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With the monitor and computer off, try to straighten bent pins with a small metal tube, like the tip of an empty mechanical pencil or the tip of a retracted pen. If the newly attached monitor does not display anything, disconnect the cable and continue to the step to Inspect the video cable and video connectors for damage. Connect the computer to another monitor to determine which device has the problem . If you do not have an extra monitor, temporarily connect the computer to another monitor for troubleshooting purposes.