In case the screen displays the “Windows” logo and asks you to choose an option for booting, read the directions carefully and make your choice.
Once you are done, click on “Exit and save changes”.
Keep touching the metal part of the case, before you delve into your computer. This helps prevent electrostatic shock, which could potentially harm your system.
Take out the memory card, graphics card and wires attached to the CPU (Central Processing Unit) pins. Remove the battery. This is located near the bottom of the motherboard. It is usually housed inside its own little holster, with a lever on one end. Wait a couple of minutes. Then reconnect each component.
Perform steps 7 and 8 only if you are comfortable working with computers. Otherwise you could end up complicating matters further.
Laptops typically require 16-20V chargers. A charger with a different voltage may not offer enough current to power your laptop.
If it is running low on power, plug it in and power it up.
Sometimes, the screen’s inverter failure causes the problem with the display. If this is the case, you could get the inverter replaced. Use an external monitor to test your laptop’s display. Plug-in your monitor, power up your laptop and immediately shut its lid. If this external monitor cannot connect to your device, then the issue goes beyond a damaged screen display.
Power-off your Mac. If your system does not respond, hold down the Mac’s power button for a few seconds. It will automatically shut down. Hold down the Command and R keys. This will power-on the system again. Click on the Mac’s built-in hard drive of Disk Utility. Click “Verify Disk” and then wait for the system to complete the task.
Holding down the Shift, Command and V enters both Safe Boot and Verbose Mode. This walks you through what Safe Boot is actually trying to do, at each stage.
Boot into Recovery Mode and click to install Mavericks. Then follow the on-screen prompts to complete the process.
