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Hardware issues?

Posted on 2015-01-27
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Last Modified: 2015-03-03
Hi!

I have two Lenovo T440s laptops. Both have same system model/rev. Both have Windows 7 Enterprise installed. Both are deployed with the same OS image and driver package, using SCCM.

When I connect an external display to the computer (not using docking) using the VGA port, the internal and the external display gets black - nothing happens. I hear the "pling plong" sound, so the machine detects the external display. But as I said, both displays goes black. The power button on the external is green, but goes orange/yellow when I connect the VGA cable to the T440s machine.

I have tried Windows+P, before and after connecting the VGA cable.
I have tried all poosible screen resolution in Windows.
I have tried the latest Graphics driver from Lenovo and Intel. The graphic card is a Intel 4th gen 4200 family. Max screen resolution is 1600x900.

The other T440s has no problems connecting to a external displyay using the VGA port. Same Hardware, same system model/rev, same OS and driver package/versions.

Do you guys have any idea what's causing this?
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Question by:Kenneth Skogstrand
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Expert Comment

by:nobus
ID: 40572226
best reimage and test again; you could have had a problem during imaging
otherwise -test ram and disk  - i use the ubcd for this
Hardware diagnostic CD    UBCD

go to the download page, scroll down to the mirror section, and  click on a mirror to start the download
Download the UBCD and make the cd   <<==on a WORKING PC, and boot the problem PC from it
Here 2 links, one to the general site, and a direct link to the download

since the downloaded file is an ISO file, eg ubcd527.iso - so you need to use an ISO burning tool
if you don't have that software, install cdburnerXP : http://cdburnerxp.se/

If you want also the Ram tested - run memtest86+ at least 1 full pass,  - you should have NO errors!
 
For disk Diagnostics run the disk diag for your disk brand (eg seagate diag for seagate drive)  from the HDD section -  long or advanced diag !  (runs at least for30 minutes)

http://www.ultimatebootcd.com/                        ultimate boot cd
http://www.ultimatebootcd.com/download.html             download page

**  you can make a bootable cd - or bootable usb stick
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Expert Comment

by:helpfinder
ID: 40572231
have you tried to connect that laptop to another monitor (or with another VGA cable)?
also did you try to use probably Fn+key combination to send output to external monitor?
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Expert Comment

by:rindi
ID: 40572326
Boot the PC with a Linux LiveCD or DVD like Knoppix and check if you can use both displays. If it doesn't work, it is a hardware issue, if not, then it has something to do with the installation.
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Author Comment

by:Kenneth Skogstrand
ID: 40575102
Hi!

Update:

I've tried several displays and VGA cables. The computer that has the problem, is still acting the same way.
The computer that don't have the problem, is OK everywhere I try a new display and VGA cable.

What I noticed was that there where different versions of BIOS on the computers. The one that has no problem, has a lower version BIOS than the one that doesn't have the problem. I tried to downgrade the BIOS but Lenovo won't let me. Lenovo says on their support site that it is no longer possible to downgrade after BIOS ver. 2.29 or 2.30 (newest).

So I upgraded the computer that didn't have the problem, that had BIOS ver. 2.21, to 2.30. I hoped that I would get the same problem on this computer now. But, I didn't!

So, I now have to computers. They both are from the same hardware rev., they both have been deployed with the same OS-image and driverpackage from SCCM, they both have same BIOS ver.
But only one of them has the problem with connecting to an external display through VGA cable.
Both the external display and internal display gets black. The green led light on the display turns from green to orange/yellow when I connect the VGA cable to the computer. I hear the "pling plong sound" that indicates that the computer detects the display when connecting the VGA cable to the computer.

What's wrong?

PS: The user that reported in this problem, has now tried three T440s computers that all have had the same problem.

But we have also tried several T440s that doesn't have the problem.

Best regards,
Kenneth
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Expert Comment

by:helpfinder
ID: 40575115
are the machone connected directly to display or you are using dock? are you able to test also with dock?
what about to test with displayport - so from laptop´s displayport to some port in monitor?
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Author Comment

by:Kenneth Skogstrand
ID: 40575136
It's the same if you use the VGA port on the docking or the VGA port directly on the computer.

There is no problem if I use the displayport cable. With or without docking.

Best regards,
Kenneth
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Expert Comment

by:helpfinder
ID: 40575171
then could be VGA port is someho damaged?  I know not totally because of that sound when connected but anyway.
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Assisted Solution

by:nobus
nobus earned 500 total points
ID: 40575412
if they still carry warranty - use it for a repair
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Accepted Solution

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Kenneth Skogstrand earned 0 total points
ID: 40583431
Hi,

I'm going to treat this case as a warrantycase, and order a new motherboard from Lenovo - to see if this helps.

Best regards,
Kenneth
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Expert Comment

by:nobus
ID: 40583674
post result!
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Author Closing Comment

by:Kenneth Skogstrand
ID: 40641465
The best solve this case I've done a warrantydeal with Lenovo.
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