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. 

Hi We are awaiting your response

Hello,

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

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.

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

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?

Hello everyone,

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

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.

Do give us a shout should you have any questions. 

So, I finally took the computer to a tecnician. 

The problem, as I was told, was the power input of the video card. He had to do something with the BIOS too.

the computer is back to life, but not as before. I do not have some basic functions, such as the auxiliar buttons that sleep the screen, or the functions shortcuts of F1-F12. My touchpad doesnt answer to multiple finger commands and the computer is very slow to start (When I bought it it would take 24 seconds to boo. Now it is taking over 2 minutes....)

The worst part: I could not run the system detect, neither instal the Dell Rapid Start.... For the rapid starts, I get an error saying that the computer doesnt have minimum system requirements...

Any thoughts?

Since there's no video card in the system -- it's a chip that's part of the mainboard -- there's no way a technician could have changed that.

It sounds like a Windows reload was done incorrectly - minus the full set of required drivers.  Are there device manager entries missing their drivers?