These are the basic steps which is very useful for you and i think this will solve your problem. The following Troubleshooting Wizards will help you to resolve a problem with a blank screen on your LCD or flat panel monitor. Examples of this type of problem include:

1.Before removing the WLAN card: Remove the AC power. Remove the battery. Remove the hinge cover. Remove the keyboard.

1.Before removing the LCD: Remove the AC power. Remove the battery. Remove the SIM. Remove memory DIMM B. Remove the optical drive. Remove the hard drive. Remove the hinge cover.

1.Before removing the LCD: Remove the AC power. Remove the battery. Remove the hinge cover. Remove the keyboard.

1.Before removing the WWAN card: Remove the AC power. Remove the battery. Remove the hinge cover. Remove the keyboard. Remove memory DIMM A.

1.Before removing the memory DIMM A: Remove the AC power. Remove the battery. Remove the hinge cover. Remove the keyboard. 

1.Before removing the coin-cell battery: Remove the AC power. Remove the battery. Remove the hard drive. Remove the hinge cover. Remove the keyboard.

1.Before removing the Bluetooth card: Remove the AC power. Remove the battery. Remove the hinge cover. Remove the keyboard.  2.Locate the Bluetooth wireless card.

1.Before removing the keyboard: Remove the AC power. Remove the battery. Remove the hinge cover.  2.Locate the keyboard.

1. Remove the AC power. Remove the battery. 2.Locate the hinge cover.