Vertical line on screen Lenovo T61 Laptop

definitely hardware sounds like yo have a disconnected LCD cable or most likely its a bad lcd screen

This is a indicator of defective LCD screen, the only option is replace the laptop monitor, go to www.ebay.com Type make and model of laptop, refine search to screen to get an idea of pricing.

If it i9n warranty take it back. Screen or the video card is defective.

Hi,
Welcome to Fixya Support
I am Michelle, and i will be assisting you regarding the issue
Please turn off the laptop...take the battery out as well as unplug the adapter cord.
once done, keep the power button of the laptop pressed for around 10 seconds.
insert the battery back in and plug the adapter cord.
turn on the notebook and check.

in case issue persists, please restart the computer..tap the f2 key on the lenovo logo. please check if the vertical line is visible in the system setup bios screen as well. If yes, then the LCD requires a replacement

If not then please reinstall the video drivers.

The battery for this laptop goes across different Lenovo models. https://www.ebay.com/itm/Lot-Battery-for-IBM-Lenovo-ThinkPad-T61-T61p-T60-R61-R61i-R60-T500-W500-R500-N/253321145683?hash=item3afb1ded53:m:m1ANAXn6ZmHfqvBOk4mj3aQ
Lot Battery for IBM Lenovo ThinkPad T61 T61p T60 R61 R61i R60 T500 W500...

some pixels are dead or you might have problems with the video card take it to the service to have a look

Hi. I think you have uninstall your display driver and download the updated drivers on the Lenovo driver support website.

Go to this website and download the video driver for your laptop: http://www-307.ibm.com/pc/support/site.wss/product.do?doctypeind=9&template=/productselection/landingpages/downloadsDriversLandingPage.vm&sitestyle=lenovo
just make sure that you choose the correct or corresponding operating system that you have on your laptop (e.g XP, VISTA or Windows 7)

After downloading the video driver install it on your laptop then restart you computer. Goodluck!

When the laptop is conected to the mains adapter and it shuts down for no reseason and you can boot up again after a period, it would indicate that you could have an overheating problem.
Check the fan to see if it spins freely and there are no dust clogging the fan and heatsink assemble, remove and vacuum the dust, if the fan is faulty, replace it.

Try taking out the hard disk, plug in power and see if you have a display on your screen or external monitor. if same thing happen, try taking out the memory card. If you hear a beep sound it's a faulty mem. card, if no beep sound appears I suspected it's a motherboard faulty.

If the line runs top to bottom and is perfectly straight then it is the panel beginning to fail.
The LCD that you see connects to a driver board behind it with a very fragile plastic ribbon strip. Any even slight damage to the connection on either side and you begin toget the problem you have.

It could have been caused by a few things.. Excess pressure opening the lid will cause it, as will closing the lid quickly too often.
Flexing the screen (opening the lid only using one hand on one side).
As you see it's more a pressure related issue then anything.
The normal "repair" is to replace the screen. To have the original driver tabs corrected can be a very expensive exercise.

If the line is feint enough, then adjusting the brightness and contrast may make it useable long enough until it is retired or a replacement screen can be found.