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framarti
Bronze

Dell Inspiron 15R SE 7520 wont turn on. LEDs and Fan pulsing on and off

My laptop started showing signs of trouble last year. At first, it would go blue screen while I was using. I neglected that. Then, It started turning off if shaken. Now it turned of after I picked it up, and it's been dead nomather what I do.

I tried unplugging everything, including power supply, discharged flea power, but nothing happened...

When I press the on button, the LED light up as they should. The screen remains dead. After about 10 seconds, the battery LED and the CD LED start pulsing on and off (around 1Hz). The fan also follows the LEDs, accelerating and decelerating... No beep is heard.

What could it be? How can I test it?

Warranty is long gone.

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12 Replies

RE: Dell Inspiron 15R SE 7520 wont turn on. LEDs and Fan pulsing on and off

Hi Framarti

Thanks for writing to us. 

As you mentioned you have unplugged everything, did the machine beep without the memory modules?? Also have you tried with one module at a  time, this will give us a little picture of if its a memory or a motherboard slot issue.Did we try an external monitor??

Do send us your system tag#, email address via private message by clicking on my name in blue.

Await your response. 

DELL-Hemalatha P
Social Media Support
#IWork4Dell
Dell Support Videos 
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RE: Dell Inspiron 15R SE 7520 wont turn on. LEDs and Fan pulsing on and off

Hi We are awaiting your response

DELL-Hemalatha P
Social Media Support
#IWork4Dell
Dell Support Videos 
Drivers and Downloads

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framarti
Bronze

RE: Dell Inspiron 15R SE 7520 wont turn on. LEDs and Fan pulsing on and off

Hello,

I didnt try removi g The memory. I'll do it tomorrow and then I can post what happens!

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framarti
Bronze

RE: Dell Inspiron 15R SE 7520 wont turn on. LEDs and Fan pulsing on and off

Hi

Here is what happened:

Removed 2 memory cards -> computer beeps twice. Screen completely black.

Replaced 1memory card*-> press button and computer turns off after 4 seconds. No response from screen. No loud beep. I did hear a high pitch beep that was not a system beep. It sound like small gears of a motor crashing it's teeth. I tried it over 4 times. All with the same results.

* I labeled the memories and tried all 4 combinations of memories and slots. Always getting the same result.

**I did everything reported previously both with battery or power cable or both. No difference noticed.

I have also tried using an external monitor plugged to the HDMI port and all memories on. Didn't work either.

The high pitch sound seems to be coming from the HD. I powered it on an listened closely. I could hear the motor spinning just just find, then the noise and all shuts down. I could not figure if the sound was coming from the HD.

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ejn63
Diamond

RE: Dell Inspiron 15R SE 7520 wont turn on. LEDs and Fan pulsing on and off

Unplug the hard drive -- if you can then get the system to boot to a BIOS screen, you've found the faulty part.  If not, it's the mainboard that's almost certainly bad.

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RE: Dell Inspiron 15R SE 7520 wont turn on. LEDs and Fan pulsing on and off

Hi please try the step suggested by ejn63 and let us know how it goes.

DELL-Hemalatha P
Social Media Support
#IWork4Dell
Dell Support Videos 
Drivers and Downloads

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framarti
Bronze

RE: Dell Inspiron 15R SE 7520 wont turn on. LEDs and Fan pulsing on and off

Good morning everyone

I did try starting the computer without the HD. Lights turn on, fan too, but the screen remains off.

Can we conclude that the motherboard is the problem?

Should I try something else?

If the motherboard is the problem, do I risk loosing personal information?

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framarti
Bronze

RE: Dell Inspiron 15R SE 7520 wont turn on. LEDs and Fan pulsing on and off

Hello everyone,

So what do you thi k about my Computer? Should I go after a new motherboard?

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RE: Dell Inspiron 15R SE 7520 wont turn on. LEDs and Fan pulsing on and off

Hi Nice to hear from you. 

Looks to be a faulty motherboard. There are 50-50 chances regarding data on Hard drive.You can take out the HD and try on a different machine and check for the same or take it to a local store and get it backed up.

DELL-Hemalatha P
Social Media Support
#IWork4Dell
Dell Support Videos 
Drivers and Downloads

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