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My laptop is not working it's CPU fan and power light is on

My laptop is not working when i power on my laptop it do not show any thing and it's CPU fan start working nothing else.

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Read below. Are you getting any light activity or beeps ?

Battery Status Lights

 If the computer is connected to an electrical outlet, the battery light operates as follows:

  •  Alternately blinking amber light and white light indicates an unauthenticated or unsupported non-Dell AC adapter is attached to your laptop.
  • Alternately blinking amber light with steady white light means a temporary battery failure with AC adapter present.
  • Constantly blinking amber light is a fatal battery failure with AC adapter present.
  • Light off — Battery in full charge mode with AC adapter present.
  • White light on — Battery in charge mode with AC adapter present.

 Device Status Lights

  •  “Circle symbol” - Turns on when you turn on the computer and blinks when the computer is in a power management mode.
  • “Drun Symbol” - Turns on when the computer hard drive reads or writes data.
  • “Battery with lightening bolt symbol” - Turns on steadily or blinks to indicate battery charge status.
  • “Antenna symbol” - Turns on when wireless networking is enabled.

 Diagnostic Beep Codes

 The computer may emit a series of beeps during start-up if the display cannot show errors or problems. These series of beeps, called beep codes, identify various problems. The delay between each beep is 300 ms, the delay between each set of beeps is 3 seconds, and the beep sound lasts 300 ms. After each beep and each set of beeps, the BIOS should detect if the user presses the power button. If so, BIOS will jump out from looping and execute the normal shutdown process and power system.


Code   Cause and Troubleshooting Steps

 1          BIOS ROM checksum in progress or failure

System board failure, covers BIOS corruption or ROM error

2          No RAM detected

3          Chipset Error (North and South Bridge Chipset, DMA/IMR/ Timer Error) , Time-Of- Day Clock test failure ,

Gate A20 failure , Super I/O chip failure , Keyboard controller test failure

            System board failure

4          RAM Read/Write failure

Memory failure

5          Real-time clock power fail

CMOS battery failure

6          Video BIOS test failure

Video card failure

7          Processor failure

8          Display failure

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