Jump to content


 


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.


Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.

Photo

System not turning on, no POST


  • Please log in to reply
3 replies to this topic

#1 extremeheat

extremeheat

  • Members
  • 2 posts
  • OFFLINE
  •  
  • Local time:12:27 AM

Posted 16 June 2017 - 06:05 PM

I have this all-in-one Acer Aspire 5600U and recently I've had issues where the computer simply won't turn on - the display flashes black for a bit and then turns back off.

 

There's no POST or anything on the display (no beep either), but the system power LED turns on and the fans and the DVD drive all start spinning.

 

Removing the RAM causes the motherboard to start beeping, so I don't think the motherboard is completely dead either.

 

The odd part is that I've found that recently just plugging the computer in turns on the system. And even more odd is that occasionally (after the system is off for a while), the system does sometimes fully boot if plugged in this way with the POST screen and beep. Perhaps something is wrong with the PSU? I'm not sure since it seems that the motherboard is powered if the fans and the DVD drive start to spin.

 

Here's some system details that I was able to get from running ubuntu (from a flash drive since I removed the Windows HDD) - https://gist.githubusercontent.com/robot56/d3fcca1880968d4efd3af1b69a47dffc/raw/. Everything functions including the speakers, bluetooth and networking so it can't be the IGPU/CPU/RAM, at least I don't think. Ubuntu did report some errors when it booted which I've attached in the image.


Edited by extremeheat, 16 June 2017 - 06:08 PM.


BC AdBot (Login to Remove)

 


#2 JohnC_21

JohnC_21

  • Members
  • 24,437 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:08:27 PM

Posted 16 June 2017 - 07:21 PM

The error indicates an issue with the display.

 

https://forums.opensuse.org/showthread.php/488559-Solved-*ERROR*-EDID-checksum-is-invalid-remainder-is-N

 

One thing to try. Pull the power. Hold the power button down for 30 seconds. Replace your power and boot. Other than that I think you are looking at some display problem. Did Ubuntu run normally once at the desktop?



#3 extremeheat

extremeheat
  • Topic Starter

  • Members
  • 2 posts
  • OFFLINE
  •  
  • Local time:12:27 AM

Posted 16 June 2017 - 11:15 PM

It ran normally, yes.

 

http://i.imgur.com/YIWLC2q.png

 

And I'd assume that it could be the display, but I'd still expect a POST beep at the least, though. The display also works fine with its HDMI-in port.


Edited by extremeheat, 16 June 2017 - 11:40 PM.


#4 JohnC_21

JohnC_21

  • Members
  • 24,437 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:08:27 PM

Posted 17 June 2017 - 06:58 AM

When booting Ubuntu there was no post beep? That is strange. What OS is currently on the computer? If Windows 7 tap F8 at boot and select last know configuration under the Advanced Boot Options. If that fails select Repair Computer and do a Startup Repair. It may take up to three attempts to complete the repair. If that does not solve the problem select Repair Computer and do a System Restore to a date just before the problem.

 

Because Ubuntu ran successfully from RAM and the DVD or USB it's possible the drive has failed. This is an all in one so when you said the display works fine in HDMI do you mean you were using an different monitor and running the original OS and not Ubuntu? You can boot a diagnostic disk similar to Ubuntu and check your RAM and hard disk. If this the computer was preinstalled with Windows 8 or 10 computer disable SecureBoot in your UEFI settings and enable Legacy or CSM boot. If there is a setting called Fastboot or Quickboot that should be disabled.  

 

Download UBCD and burn to a disk as you did Ubuntu. Do not click on the sponsor link. Click the hard drive icon. Click on the At the menu screen select Parted Magic. At the desktop select Disk Health and run the short/long generic tests. If those pass then reboot UBCD and under the Memory section run Memtest86+ for at least 6 passes.

 

In order to disable SecureBoot you may need to enable Supervisor Password and provide a password.

 

https://us.answers.acer.com/app/answers/detail/a_id/27072/

 

https://us.answers.acer.com/app/answers/detail/a_id/27045/kw/UEFI






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users