I bought an old Toshiba Satelite which arrived with a smashed screen, when switched on showed a blank white screen, changed screen, still lights up white. Changed the screen lead, still lights to a blank white screen. External VGA works fine. Whats left motherboard perhaps?. Am I right in thinking that it cannot be the inverter as the screen lights up.
You are correct. If the screen lights up (even without any image), the inverter board works properly.
You’ve replaced the LCD screen with video cable but still experience the same problem, so it must be related to the video card. Most likely the video card is integrated into the motherboard, so it’s the motherboard problem.
I have a Toshiba Satellite M35X-S149 that will not boot up or post.The led around the power button stays on.The only way to turn it off is to unplug the power adapter and take the battery out.It will power on for about 5 seconds and the fan will go right back off but it looks like the power button stays on. All the LEDs in the front are on as far as battery and power.Have tried to boot up with out a hard drive and same thing. Have pulled the memory out and replaced it same thing. Bought a new power adapter that didn’t work either. It’s like it’s always on but won’t boot. By turning it on the fan and the led for the hard flashes but goes right off again. About ready to throw this thing out and buy a different laptop.
I think there is a problem with the motherboard and it has to be replaced. You can try to troubleshoot the laptop as it explained in this post, but I’m pretty sure you’ll get the same result.
The screen on my laptop Compaq nc6120 gets dim as I plug the power adapter and it will be ok as I unplug the power cable. Would there be any idea that can help?
I think there is nothing wrong with your laptop, it’s just settings in the power management software. Usually you can adjust screen brightness separately for AC mode (when laptop runs from the power adapter) and battery mode (when laptop runs from the battery). Apparently, in your case the screen brightness has been reduced for the AC mode.
Go to the power management utility and turn the screen brightness all the way up for the AC mode. On some laptops (some Dells for example) you can change LCD screen brightness in the BIOS setup menu.
I have a Toshiba Satellite notebook. Recently, and for no apparent reason, when I pushed the power button to turn on my notebook, the computer would turn on, but the monitor would not show any image or even any sign of light (doesn’t even light up). Is this possibly a driver issue, or will I have to get a new monitor.
No, it’s not a driver issue because this problem occurs as soon as you start the notebook, even before Windows (and drivers) start loading.
First, you’ll have to test your notebook with an external monitor attached to the VGA port on the side of your notebook. If both internal and external monitors have no image, this problem is not related to the notebook screen.
When I move or lift up my laptop video on the screen becomes garbled and everything freezes. The laptop works fine as long as it stays on the desk but when I lift it up video goes bad and cursor freezes. After that I have to do a hard reboot.
Today I had to troubleshoot a laptop with similar problem.
The laptop was working fine on my bench.
I have problem with my screen flickering a rainbow of colors even when I was at the Windows bootup logo. But when i using a video output everything is fine. Any Idea?
I have a Compaq Presario V3000 Series Notebook PC.
The external video works fine, so your problem is not software related. I don’t think it’s motherboard or video card related problem either, otherwise you would get garbled video on the external monitor.
The backlight on my laptop LCD lights up..but there is no image. Even when its Posting (before booting in the OS) there is no image.
HOWEVER if i put pressure on a corner of the LCD, the image shows up.
Is it a bad inverter or video cable or other?
This problem is not related to the inverter. Your LCD screen lights up (even without image) so the inverter board and the backlight lamp work fine.
Most likely you have a problem with the LCD screen and it has to be replaced. Apparently, the LCD controller board has a bad solder joint and it makes contact only when you press on the screen.
My screen has random blue pixels, usually within the gray areas of windows that are open (top of Firefox, taskbar etc). This can occasionally be fixed by tapping the side of the screen on both sides, but this does not appear to be fixing it now! I have the latest video drivers etc, which have not made any difference.
If you move the window around the screen the blue pixels will move with it, however if the screen is all white you will not see any blue pixels. Yellow images appear to make the blue pixels the worst. Would this be damage to the LCD or something else?
First of all, test the laptop with an external monitor. If you see the same video defect on the external video, most likely your problem is related to the motherboard and there is a problem with the graphics card. If the graphics card is integrated into the motherboad (most likely it is), the whole motherboard has to be replaced.
If external video is fine and random blue pixels appear only on the laptop screen, you can try the following:
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I have a HP pavilion dv8000. I love my laptop. I have an intermittent problem with my display. Sometimes the picture is fine but, at times the screen is garbled with vertical lines that are multicolor fading to gray. If I apply pressure to the back of the screen the lines would go away, now it’s very hard to make them go away. I will move the screen up and down until I find a good spot, I have to hold that spot until I am done. When I let go the lines come back. I am in no way a PC tech person but, I think that I can make this repair myself.
If you do not feel comfortable taking apart your laptop, I would suggest taking it to the service center. You can damage the laptop if you decide to open it up yourself.
Here’s how I troubleshoot laptops with similar problems.
I have a Inspiron 9400/E1705 with a nvidia geforce go 7800, when i start the system (DELL logo) appears green vertical lines through all lcd display, when i tried to test the 3D the display die and then a blue screen say the hardware is something wrong and the driver, i’m not sure if the card is bad, because it works for a time and then failed, i tried to reinstall O.S.(windowsXP) and drivers and it works for a while and then fail so now i have uninstalled the nvidia driver when i started windows the display is good with no lines but poor resolution due to video card is uninstalled.
If you see vertical lines as soon as you turn on the laptop and they run through the Dell logo, most likely this is a hardware related problem and this problem is not related to the operating system or the video card driver.
Test your laptop with an external monitor. Attach the monitor to the laptop, turn on the laptop and press Fn+F8 to switch the video signal to the external screen. If you see the same green vertical lines on the external monitor, most likely you have a problem with the video card.