Hi Raghu,

Let’s try the following steps:

Drain the residual power from the laptop:

• Disconnect any external peripherals (flash drives, printers, external hard drives) from the computer
• Then remove the adaptor from the computer
• Remove the battery from the computer
• Press and hold the power button on the computer for 10 seconds
• Reconnect the battery and the adaptor
• Restart the computer and check if it works

If the above steps do not work, then perform the diagnostics on the computer to check the functionality of the hardware.

• Power off the computer
• Please restart the computer
• As soon as you see the blue Dell logo, start tapping the ‘F12’ key which is at the top of the keyboard

Note: If you wait too long and the Microsoft Windows appear, then continue to wait until you see the Windows desktop. Now shutdown your computer and try again.

• Restart the computer, tap F12 on the Dell logo
• Select ‘Diagnostics’ from the boot menu using the down arrow key
• PSA takes 5 to 7 minutes to scan all hardware components for functionality
• Tap to confirm if color bars are visible on the screen
• If any error code comes up, make a note of the error code and the message and continue the test
• If there is no hardware failure, A message will appear on the screen,
• Mouse is inoperable on this screen. Use arrow keys on the keyboard to select 'No' and exit the testing to restart the system
• You can refer to the link for the list of error codes http://dell.to/MNniAq

Alternately, run the Fixit to increase the performance.

• Click on the link http://bit.ly/SaqEhY
• Click ‘Run Now’
• Click on ‘Save’
• Choose the location as desktop, save the file on the desktop
• Right click on the file and choose ‘Run as Administrator’
• Choose ‘Allow’ if prompted
• Follow the on screen instructions to run the program
• Restart the computer

Please reply if you have any questions.