Asus Laptop unable to boot (black screen, no bios)

[dedekind]

Hi guys,

I have an Asus X45C laptop about 10 months old. Yesterday I finished watching a movie with very little battery left, so I closed the lid, put it away and went to bed. This morning the laptop won't boot. Of course I charged the battery all the way, and tried several combinations of turning the laptop on only on AC adapter, only on battery, on both; I also tried removing battery and adapter, holding ON button for several minutes, then trying to power up again with only adapter, only battery, or both, all the time the result is exactly the same, so these are the symptoms:

- Screen is completely black, no bios, no beeps, no anything.
- Power and battery lights turn on (they work ok, if I remove the battery, the light shows that, etc.)
- Hard disk light comes on for about 1 second, then off forever.
- Caps lock and num lock are constantly on.
- Keyboard doesn't do anything at all.
- The DVD unit is working: when I turn the laptop on, it will make noises, and if a disc is inside, it will make even more noises, the usual noises that I get when reading a disc. The button for opening the unit also works. I tried powering up with the DVD unit open, and no noises at all.
- No fans at all are working.
- Also tried using an external monitor, no luck.

I really don't want to RMA it, I know it could be a hardware failure, but it could also be an easy repair. Maybe the CMOS battery or something related to hibernation. Caps lock and num lock always on is what really strikes me.

Oh and one more thing. A couple of times in the past, I had to force a shutdown on the laptop so I would press the ON/OFF button for 4 or 5 seconds.. when it did shutdown, as far as I recall, that was it. When I do that now, I hear a very slight beep after doing a force shutdown. I'm pretty sure this beep was not present when I did force shutdowns before.

Any comments are widely appreciated, thanks!

Update: the beep may have been there before, nevermind. One more sympton: closing the lid doesn't do anything, the same lights are on.

 

[ladywolfmoody]

I pulled the battery out waited then reinserted. Worked after that.

 

[lisaeg]

Hi, this happened to me last night with my ASUS. No worries! I am not a computer expert. I. Shut the lid like always and the next time I went to use it it did the exact same thing yours did. I turned mine off by holding the off button in for 2 minutes. Then started it up. This time it showed Windows updating , which took quite some time. It went through a restart on its own then another update and everything works normal now. Here is my thought. It must have shut off last night during a very important update. Where it clearly says do not turn off your computer updating. Very simple. I hope you got it back up without too much trouble.

 

[Not very useful]

Hey guys have had asus for a year or so sometimes deleting or uninstall programs can cause this what I found that works is plugging it directly into the Internet turn it on and leave it there on charge asus will automatically connect to the asus server after a while things will start to happen you'll slowly gain access then you can repair

 

[josemota90]

Hi Guys,
After some struggle, found the solution! The problem is on the wireless card... If it isnt well inserted your laptop will not boot, no matter what you do!!!

 

[cmleow]

Good day to all.
I am having similar problem with my ASUS laptop A43SD after flashing to new bios version 208 using the EZ flash ultility in the CMOS. I have tried all the suggested key combinations but got no luck. After pressing power button, DVD drive spin, led on for 3 or 5sec then power off. No beep no nothing. I believe d flashing have corrupted the bios But Don't know how to fix it. Any guru here got other suggestions? Thx.

 

[Paula Bonsu]

Yes!! I took the advice and pressed fn, f5, and power button to turn it on, worked like a charm. Try it!!

 

[RoB Ambrossio]

penplez05 said:
.... after taking the DC power supply out and unplugging the AC power supply ; hold main power button down for 2 minutes. then reinstall the battery pack, plug in computer to AC source and push main power button and FN button and f5 button all the same time. that's what worked for me good luck!!!!

Guys, I just had the same issue and it worked. You're a life save PenPlz!!!!
Quoted 1 time.

Hey guys! I just have the dame issue with my Asus X750J and I tried what penplez05 said and it worked!

In my case a Windows 8.1 update was interrupted while it was being installed.

I tried disconnecting Power Charger from Power Outlet... Unppluging the power charger from my laptop... then pushing down the Power Button for about 2 mins... and then pushing power button again like a nornal turning on process and it worked out!

Reading the thread I saw I guy saying "when a Windows update is not installed properly for any reason... Windows will protect the computer with a power warning until this get corrected or deactivated this power warning"

 

[dahaabz6]

I have the same problem with my asus
.LEDs flash
Battery light on.
Power light on.
No power to screen. Blank. Black.
All what you have to do is just test your RAM or RAM slots by removing the power then take all the RAM out then place them one at the time and switch between the RAM slots and you will figure out witch RAM or witch slot is not working and you will be back on track.
Good luck guys.

 

[Dhanushka_Liyanage]

Hi Guys,

I know that original post is very old. But I believe there can be so many people around facing difficulties with same issue.

I had similar problem with Asus K43Jr model. There was only black screen after power on. HDD worked only for few seconds and HDD LED went off. Power LED stays on and fan spun at full speed. No BIOS or Asus logo at least.

My suspicion was about gpu. Because I checked by disconnecting LCD connector and connected external monitor, It didn't work. And also CPU fan worked endlessly giving a hint that motherboard was working.

1. I dismantled the laptop completely and separated motherboard from other components.
2. Removed heat sink and fan assembly.
3. Removed processor.
4. Located GPU (ATI mobility Radeon chip)
5. Isolated this chip by covering other electronic components by using alufoil with capton tapes.
6. Heated GPU using hot air gun by monitoring the temperature.
7. Needed to heat it up to 220deg celcius and maintain it for 1-2min. (Read temp profile for chip for more accurate info)
8. Left it cool down upto room temp.
9. Assembled back all laptop again.

Power up...And got everything running again....

Hope this help someone who need some info.

 

[Doctor Gadget]

Hi. I have the same problem with an Asus X54HR. Suddenly it stopped working!
It turns on, the lights are on, only the light from hdd stays about 1 sec on after that it turns off, cooler doesn't turn on at all and the screen is black. I don't know what to do anymore, I tried everything: hold the power button, take out the hdd, take out the optical drive, switch the ram, verified all the connectors to mainboard, take out the bios battery, even reflow the gpu. Nothing works! PLEASE I NEED HELP ON THIS... It could be the controller on the mb?

 

[Dhanushka_Liyanage]

Hi. I have the same problem with an Asus X54HR. Suddenly it stopped working!
It turns on, the lights are on, only the light from hdd stays about 1 sec on after that it turns off, cooler doesn't turn on at all and the screen is black. I don't know what to do anymore, I tried everything: hold the power button, take out the hdd, take out the optical drive, switch the ram, verified all the connectors to mainboard, take out the bios battery, even reflow the gpu. Nothing works! PLEASE I NEED HELP ON THIS... It could be the controller on the mb?

Did you experience any overheating of your laptop? Because reflow solution may work only if you have any overheating issues with GPU. Basically it may weaken solder contacts and with reflow you can fix it.

When you held power button on, did u remove the battery?

 

[Saeed2157]

Hi fellas
My name is Saeed
I had the same problem last night.
This problem is related to RAM units
First you should turn off your device, unplug the charger and remove the battery
Then hold the power button for at least 30 seconds. Then try to turn on the device using only the charger ( do not attach the battery). If it happens to work then it's done. Otherwise, open up the bottom casing of your laptop where you can see Hard drive and RAM units. There is plastic screw somwhere near the RAM slots. There is two signs around it representing "locked" and "unlocked". Make sure it aligns the "locked" sign.
If it didn'n work either, the RAM unit is damaged. Try to replace the RAM with a proper one. If it didn't work either, then it may be the RAM slots causing this problem.

 

[clivea]

I had this problem with an U36SD. This is what I did. I disconnected the hard drive then booted up the laptop. The start screen appeared so I was able to eliminate any problem with the screen itself. I then replaced the HDD and immediately the Windows process started and everything was back to normal. Just be careful when opening the machine up, removing first the tabs by the RAM under the back cover. There are some good demos on how to open these machines on Youtube. Of course in my case it may have just been a faulty connection but whatever it's worth a try.

 

[Richard_1975]

Overheated GPU is the root cause!!

Dhanushka_Liyanage posted the best working solution, but will require technical knowledge/expertise to perform the fix. If you don't have the technical expertise, I suggest you bring your laptop to an expert computer technician.

Kudos to Dhanushka_Liyanage!

reposting Dhanushka_Liyanage solution:

"I had similar problem with Asus K43Jr model. There was only black screen after power on. HDD worked only for few seconds and HDD LED went off. Power LED stays on and fan spun at full speed. No BIOS or Asus logo at least.

My suspicion was about gpu. Because I checked by disconnecting LCD connector and connected external monitor, It didn't work. And also CPU fan worked endlessly giving a hint that motherboard was working.

1. I dismantled the laptop completely and separated motherboard from other components.
2. Removed heat sink and fan assembly.
3. Removed processor.
4. Located GPU (ATI mobility Radeon chip)
5. Isolated this chip by covering other electronic components by using alufoil with capton tapes.
6. Heated GPU using hot air gun by monitoring the temperature.
7. Needed to heat it up to 220deg celcius and maintain it for 1-2min. (Read temp profile for chip for more accurate info)
8. Left it cool down upto room temp.
9. Assembled back all laptop again.

Power up...And got everything running again....

Hope this help someone who need some info."

 

[Tecnomza]

Sorry for my English (google translator).
By God, ¡it is not a hardware problem!, Is UEFI boot Win8 frozen (It has a problem). To solve it have to do what he says "penplez05", but, WITHOUT DISCONNECT NOTHING.
Only need to press the power button for a minute or more. Then keep pressing Fn + F5 simultaneously and hold, press the start button. Recovery Screen appears. Choose "Restart PC" and wait.

It worked for my notebook Asus Q550L, but I suspect all about Asus UEFI boot.

They also have the possibility to enter the BIOS pressing the DEL button repeatedly immediately after starting. In BIOS, to load the default values ​​or go to System Administration and change to Enable LEGACY not to charge the Win8 image (also to add USB boot, watch videos on youtube).

I hope this post is helpful. I beg you not to touch the hardware.

Paul J. Pizarro - Argentina
Regards.

 

[Ronny_]

I had an Asus with black screen and no bios. Took the HD out, tried to start, then put it back and it worked.