My compurter boots up fine cause i can here it, but monitor is black out. I turned it on and this what happened. What can I do to get the screen to come on. I would like to unscrew some of the bolts to see if there is a shortage in the black light
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Your thinking along the right lines, first of all check the laptop using an external monitor, if you get the same problems on an external monitor it is likely to be mainboard/GPU fault. If display is fine on an external monitor I would recommend taking the laptop apart and check the LCD cable is connected correctly as the first port of call. If that doesn't cure your issues I would look at replacing the LCD cable, then maybe the screen.
Are you sure that the display is not set for external monitor only? Also take bright flashlight and shine on the display. If you can see the images then the problem is with the back light and usually caused by a bad inverter. Some times you can get the back light or inverter bu most times it is easier and cheaper to replace the entire display.
Try plugging the laptop into an external monitor to make sure the laptop is booting up properly. If it is unplug the monitor from the laptop; or if you know the laptop boots up fine and you get the windows audio when it boots and the initial starting beeps then forget the monitor. Shine a torch or light source on the screen and if you see a faint picture then the inverter on the screen has developed a fault.
The screen goes black while in normal mode right? So try to boot in safe mode (power on then keep tapping F8 then select safe mode). Check if still happens in safe mode.
If screen does not goes black in safe mode it means there might be a software or driver causes problem when running in normal mode. You can try the following (update your anti virus software then run a full system scan, uninstall the video driver then download and install the latest one, uninstall any previous windows update or you can system restore to the time when it was working fine).
If the screen goes black even in safe mode they try connecting the laptop to an external monitor if still goes black, if yes then absolutely no issues with the LCD panel. You can try (uninstall and reinstall the video driver if still persist then this might end up replacing video card or motherboard, but before doing that update the BIOS first).
If does not goes black in ext monitor then the LCD panel might causes the problem. Reseat the LCD cable or inverter if you can.
Laptop batteries normally just last for a few years, depending on usage. If your battery is almost done, it may report a 'full' status, but just have the capacity to feed your laptop for a few minutes.
You may check this by disconnecting current while your laptop is started up. If low battery capacity is the cause, the same will happen within a few minutes.
Laptops normally go in standby on low battery, to avoid data loss.
1st - Try pressing <Fn> + <BrithnessUP> keys a few times, (on HP <Fn> key is between <Ctrl> key and <Windows> key, <BrightnessUP> key is <F8> key and <BrightnessDown> key is <F7> key. If nothing happens try the 2nd one.
2nd - Plugin external monitor, (type and size doesn't matter). Turn on your laptop. If you can see desktop on the external monitor, your
drivers are o.k., The problem is your laptop display, NOT the graphic chip.
IBM's are famous for this ...that's why they've changed their keyboard configurations so frequently, because palm pressure would either a) prematurely damage the hard drive or b) cause problems with the AC/DC card (IBM's term, not mine).
My guess, since I used to repair IBM laptops for a living, is the AC/DC card. It directly controls video output to the LCD. You can probably find one "pulled" on eBay for around $50, and probably $50-100 for someone to install it for you.
If you're working on the computer when that happens, it's not probably a power setting. Try to update your BIOS to the most current version at the toshiba support website (support.toshiba.com) & see what happens. Fixes the issue most of the time