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Dani AI

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Several people here suggested sensible starting points — (backlight), (external monitor), (power/sleep) and / (memory checks). Below is a compact, practical diagnostic path that avoids fishing around with low‑priority “cleaners” and focuses on the things that actually distinguish hardware vs software faults.

First, isolate the video path and power-to-panel. A quick “flashlight test” will tell you if the panel is still producing an image but the backlight is dead (shine a bright light very close to the screen; a faint desktop means backlight/inverter/panel power issue). If the faint image appears, the problem is almost always the display assembly, inverter or the hinge/LVDS cable — not Windows settings. If you can, note whether the BIOS/POST shows before Windows loads; that also separates hardware from driver problems. (ifixit.com)

If the hardware path looks OK or the laptop shows the BIOS but the desktop goes black after login, treat it as a driver/OS issue: press Win + Ctrl + Shift + B to reinitialize the graphics stack, or use Ctrl + Alt + Del → Task Manager to restart explorer.exe. Boot to Safe Mode to uninstall or roll back display drivers, and check reliability logs for display-driver or kernel errors (open Reliability Monitor with perfmon /rel or Control Panel → Security and Maintenance → View reliability history). These steps expose recurring driver crashes or misconfigured display output. (support.microsoft.com)

Decision notes: if an external monitor always works while the internal panel is blank (and the flashlight test is negative), suspect the panel/cable/power circuitry; if both internal and external are blank, concentrate on GPU/driver/firmware and Event Viewer entries. If you need to open the machine to reseat cables, remove all power and the battery first and get a guide for your model — otherwise seek a repair shop or the manufacturer. These checks will give focused evidence to share (model, when it happens, BIOS vs post-login, external-monitor result), which makes the next step much clearer. (ifixit.com)

Recommended Answers

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i would love to try and help you, but i dont understand what you're asking.
i'm assuming your screen is just randomly going blank? if that's the case, the backlight might be starting to go... is it a laptop, or a desktop?

i think wou should first try to clean up your RAM...and than try again and if not start replay again..

Firstly,try to output your laptop to another monitor and see whether the screen is coming or not.
IF yes,then the problem is with your screen,If no then try to clean the RAM and then check

The system might go to sleep mode. If not, change your system's power plan settings. Cleanup RAM using third party software available on internet. Disk Defragment is also good option.

it also happens with my desktop. but i hve to restart it in the end. i have reintalled the window as wel. but this problem is there.
why this happens?

It might be a 3rd party application that you have installed and is consuming your machine's resources (RAM). Try to check if any app running in backround which is taking too much of your RAM, stop that application and check if it happens.

Could you give a few more details? Please list, exactly, your hardware, and all the 3rd party software you are running, especially the anti-virus programs.

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