Solved! Laptop strange black screen issue

[Petix]

My laptop runs great as long as it is plugged in, and left on or in sleep mode. If it gets turned off or unplugged it will not turn back on normally. It used to take 15 minutes up to few hours before the Lenovo logo came on, now it’s stuck on black screen for two days. There is a single BIOS beep when plugged/unplugged while the battery is in. From what I googled, it seems to signal normal booting. The light indicating that it is turned on lights up and is solid (not blinking). The screen is black and the Caps/NumLock light will not turn on. I can hear the fan running, CD-ROM ejects etc. I tried all the usual tricks and nothing. Before, if left plugged in and “on”, it eventually would boot up on it’s own, hours later. But now it’s been too long. What does this mean? Possible to resurrect?

Besides the myriad battery/motherboard/RAM/hardware solutions on the Internet, one suspicion I have is the computer is unable to find/load Windows. The reason I think so is because before the issue emerged months ago, I remember playing with tweakings and cleaning software that also targeted system files, especially the bloated Windows updates junk, among others. Could this be a factor? If so, is there a fix under the circumstance of laptop not booting? Thanks.

 

[webworkings]

Before going all out to find other issues, since you are getting nothing on the display at this point, start with the following ...

1. Turn the laptop off (not sleep or hibernate but off).
2. Connect an external monitor to the laptop.
3. Turn on the external monitor.
4. Turn on the laptop.

NOTE: You may have to press an "external monitor" button. Could be the f4 button or a button with two monitors on it, for the external monitor to work.

If you can see fine on the external monitor, then your attached display, or the ribbon cable that connects it, are your problem.

If you can't see on the external monitor at all, or the problem occurs on the external monitor as well, then it is probably the graphics card/GPU that is the problem, which may require the motherboard be replaced.

You may also want to try hitting CTRL + SHIFT + WIN + B to try and reset your graphics driver as another possible fix.

 

[Petix]

Tried all of above, nothing worked. External monitor shows nothing.

 

[webworkings]

If none of it will show you anything, no matter the display or an external monitor, then you will need to have it looked at to see what hardware (motherboard, drive, etc.) is going to need replacing, if not more than one.