I have a Toshiba Sattelite that seems to have a vertical hold issue like the old TV's. For the most time it boots fine with the screen normal as it can be. The not too long into it being on the screen starts to scroll vertically and it is fast. It will occassionally stop but not long enough for me to attempt to change any settings on the resolution or anything.
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Try unplugging the laptop. Then remove the battery. With the laptop unplugged and the battery removed, hold the power button for 10 seconds. After that replace the battery and plug the laptop back in. Press the power button and the computer should boot if there is no issue with the motherboard.
Hello What type of TV do you have, analog or digital? If you have an analog TV
and the screen is rolling it is the vertical hold. Because the vertical hold
operate on 60 cycle which the same as AC line cycle. The 60 cycle in the
vertical hold is as a oscillator or timing circuit. When the TV pick up the
image for the NV devise, they just don't mix. Why, because image intensifier
tube in the NV devise is operation at 25 to 50K Hz or cycles. The vertical hold
circuit pick up on the 50K Hz signal which mixes with 60 cycle timing circuit
causing the screen to rolling with lines across the screen @ 60 cycles. Digital
camera and digital camcorder with digital TV will help, or a image inverter that
takes this 50k Hz signal and covert it to some that analog TVs can use.
1. try connecting laptop to an external monitor and check if this vertical dark gray bar appears. if yes it means video is the problem. you need to boot in safe mode then uninstall the video driver. boot to notmal mode then download and install the latest video driver. if still same problem then replace video card. if video is built in with motherboard you need to replace motherboard.
2. when the vertical dark gray bar did not appear in the external monitor then it means issue is with the LCD panel. Do this turn off laptop. press and hold D key then press Power button at the same time or Press and hold on the Fn key then Power button check if the test will run. Color displays full screen when you keep pressing on N key when the colors appears check the vertical dark gray bar if still exist in the test, this means LCD panel and LCD cable needs to be replaced.
There is a fault in either the input video amp, sync amp, sync separator, or the vertical scan generator areas. Most of the time this type of failure is caused by capacitors in these areas going off spec from age and use.
An experienced TV tech who is familiar with your set should be able to service this for you.
Hard Drive Issues most likely, Try booting to your Bios Setup utility Page...
Hold the f2 key (or delete key)(some are also f12)Check to see if your HD shows up in there, then reboot and hold the F8 key to try and get to the SAFE MODE options screen... there ya can boot it into safe mode if able to get to it..
to me its sound like your on the right track. there isnt a physical vertical hold adjustment. more than likely the vertical hold ic has failed. send me your email addy to firstname.lastname@example.org and i will be more than glad to email you a service manual