My lenovo ideapad is not starting up and is just flashing the external screen connected light, i tried removing the battery and holding the power button for ten minutes and the problem seamed to stop the time i started up the laptop but started imediately after system restarted for the second time!

SOURCE: Blank screen upon startup

Try taking out the hard disk, plug in power and see if you have a display on your screen or external monitor. if same thing happen, try taking out the memory card. If you hear a beep sound it's a faulty mem. card, if no beep sound appears I suspected it's a motherboard faulty.

SOURCE: lenovo y410 notebook not starting by light and battery.

hi,

This iue might be with RAM only so please open the chamber on the bottom(after checking manual,there will be two screw only) and once refix it.If not then get it checked by any hardware expert.

SOURCE: my lenovo Y510 ideapad turns on but the screen

The next tim eit is turned on, try shiniing a bright flashlight directly on the screen.

If you can see anything there then the backlight has burned out on the screen, and will need to be replaced.

If you cant see anything, try hooking up an external monitor to the laptop, if you have a desktop the monitor for it will work for the test..

If the external monitor you hook up will work, then you will have to replace the screen..

( or at a minimum the inverter board, or check that the cables are tight that go to the screen)

SOURCE: Lenovo S10e - No Display on Startup

if your sure the screen is not the problem then unfortunatly your looking at a motherboard issue and this proves sort of costly sometimes i know its a real pain but you can have someone repair it for you or simply buy another motherboard and have it installed im sorry but that is all you can do at this point! i hope this helps!

Testimonial: "Thanks for the help."

SOURCE: Thinkpad T500 lenovo laptop will not start but bat...

1. Shutdown laptop.
2. Remove battery, other external peripherals connected, disconnect from ac adapter.
3. Press and hold power button for 10 seconds to drain power.
4. Restart laptop.