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Old 10-02-2013, 05:21 PM   #1
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Default Asus laptop won't boot

I've got a laptop Asus X71SL and it won't boot.

When I hit the power button, the screen stays black and the fan does not spin. The first time I boot it, the HDD led is always on (it does not flash). The next times, the num lock, caps lock and HDD leds are always on. If I unplug and plug the power cord and then start the laptop, only the HDD led will be on. And if I start it again, the three leds will be on. Etc.
  • I am unable to go in the BIOS, unable to go in GNU/Linux, unable to boot on a live-CD.
  • I tried to boot without hard drive, without RAM and without DVD drive, wihout success.
  • I tried to use only one of the RAM sticks and then the other. I tried that on both RAM slots.
  • I tried with and without battery, without success.
  • I plugged another screen and no signal goes to it.
  • I tried to reflow the graphics card.
  • I tested the RAM and the CPU in another laptop and they work.
  • I tried another graphics card and it does not change anything.
I also followed the tutorial without any success.

The only hint I have is that the fan spins when I remove the graphics card (it does not spin when the graphics card is plugged to the motherboard). What does it mean?

What can I do to boot the computer?

Thanks for your help.
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Old 10-04-2013, 04:38 AM   #2
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It seems the motherboard is dead...
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Old 03-19-2014, 02:11 AM   #3
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Seems to me that the mobo chipset circuitry is faulty.
Have the chipset reball may help.

Try replace the small Bios battery, that may help.
Also reseat the CPU as well.

Hope this helps a reset on the mobo.
Tech Manaeger, WPTinc.
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Old 05-18-2014, 05:09 AM   #4
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Thanks for your response.

I did everything you wrote and one of them did something.

I removed the BIOS battery and connected it again (I'm sure I've already done that, but this time, something happened).
Then, I was able to boot the laptop.
I saw the Asus screen and I was even able to access the BIOS setup.
When I was in the BIOS setup, I kind of see the screen flicker twice with a delay of about 10 seconds between the two flickering.
Then, I powered off the laptop.

However, the fan still did not spin.
I saw a couple of errors during the POST.
Here is one that I remember:

CMOS battery low
There were other errors about CMOS. Here is one that I am not sure, but I think it was on the screen:

CMOS Checksum Error
I rebooted it a few times (trying to make the fan spin) and the laptop booted correctly, but after 4-5 times, the laptop did not boot anymore (same black screen as before).
I should be noted the the fan only spin when no graphics card is connected to the motherboard.

Then, I put a new BIOS battery, but it did not changed anything (still unable to boot).

After that, I tried to reproduce this without any success. I am now unable to boot the laptop.

What do you suggest?

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Old 05-18-2014, 02:07 PM   #5
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Either replace the motherboard or the laptop.
No wonder it doesn't work! You installed the coils backwards!

Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium.
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