Question:

How to troubleshoot a Lenovo Y70-70 Touch laptop with a black screen and no boot display? >
> I have a Lenovo Y70-70 Touch laptop that does not show any boot display on the screen or on an external monitor. The screen is completely black, but the power, battery, and HDD LEDs are on, and the HDD LED is blinking. The keyboard is also lit up and the fan is spinning. The laptop beeps when I plug in the power cable. I cannot access the battery without opening the case, so I cannot perform a hard reset. What could be the cause of this problem and what are some possible solutions?

Answer:

How to Troubleshoot a Lenovo Y70-70 Touch Laptop With a Black Screen and No Boot Display

• Explain the problem and its symptoms
• Mention the possible causes and consequences
• State the purpose and scope of the article

Sample paragraph:

If you own a Lenovo Y70-70 Touch laptop, you may encounter a frustrating issue where the screen is black and the laptop does not show any boot display. This means that you cannot see anything on the screen or on an external monitor, even though the laptop is powered on and the keyboard, fan, and HDD are working. The laptop also beeps when you plug in the power cable, indicating that it is receiving power. However, you cannot access the battery without opening the case, so you cannot perform a hard reset to restart the laptop. This problem can be caused by various factors, such as hardware errors, faulty display, low or dead battery, software errors, or corrupted graphics drivers. If left unresolved, this problem can prevent you from using your laptop and accessing your data. In this article, we will show you how to troubleshoot this problem and provide some possible solutions.

Solution 1: Restart the Graphics Driver

• Explain how to restart the graphics driver by pressing Win + Ctrl + Shift + B
• Explain how this refreshes the display connection and could fix the black screen
• Provide a screenshot or a video of the process

Solution 2: Restart the Laptop Without Any Peripherals Connected

• Explain how to restart the laptop without any peripherals connected (such as mouse, USB hub, etc.)
• Explain how this eliminates the possibility of a peripheral causing the display issue
• Provide a screenshot or a video of the process

Solution 3: Perform a Power Drain

• Explain how to perform a power drain by removing the power cord and the battery, and holding the power button for 60 seconds
• Explain how this resets the laptop and clears any residual power
• Provide a screenshot or a video of the process

Solution 4: Connect to an External Monitor

• Explain how to connect to an external monitor with a VGA cable or an HDMI cable, depending on the available connections
• Explain how to press F4 or another key with a monitor icon to switch the display mode
• Explain how this tests the LCD and the LCD cables, and indicates if the display or the cable is faulty
• Provide a screenshot or a video of the process

Solution 5: Update the Graphics Drivers

• Explain how to update the graphics drivers by using the Device Manager or the Lenovo Support website
• Explain how this fixes any corrupted or outdated drivers that could affect the display
• Provide a screenshot or a video of the process

Conclusion