Signal Keeps Going Out And Computer Shuts Down.

1. Check the power supply: Make sure that the power supply is properly connected and that it's providing enough power to the device. If the power supply is damaged or not providing enough power, it can cause the device to shut down unexpectedly.
2. Check the temperature: Overheating can cause the device to shut down unexpectedly. Check the temperature of the device and make sure that it's not overheating. If it is, try moving it to a cooler location or using a cooling pad.
3. Check for updates: Check for any available updates for your device, including the operating system and drivers. Outdated software can cause stability issues that may lead to the device shutting down unexpectedly.
4. Check for malware: Malware can cause instability and unexpected behavior on your device. Run a malware scan to check for any potential infections.
5. Check the connection: If the signal is going out, check the connection between the device and the display or network. Make sure that all connections are secure and that there are no damaged cables.
6. Reset the device: If none of the above steps resolve the issue, try resetting the device to its default settings. This may help resolve any software-related issues that could be causing the problem.

If you're still experiencing the issue after trying these steps, it may be worth contacting Lenovo customer support for further assistance or taking the device to a qualified technician for repair.