My screen wont brighten on my lenovo flexpad - Lenovo Computers & Internet

At the top of the keyboard there is a key which looks like sun press the fn key and it at the same time there should be 2 so choose the one to brighten

Is it problem accours in another monitor that pluged to your notebook? If no, the possibility is inverter failure. Try to replace the inverter to your service centre

It sounds like the screen inverter went out, it needs to be replaced. Take it to a local computer store, not a big corporate store, they will charge you way too much.

Lenovo typically uses F11 (dim) and F12 (Brighten). Or, if you are running Windows 8, move the cursor to the lower right and wait for the menu. Select SETTINGS, and you will see BRIGHTNESS button on the SETTINGS screen. Click it and adjust it.

try adjusting your contrast. Sometimes a full blown contrast setting will blacken the screen. If that doesnt help...contact tech support of the company that manufactured the laptop.

1. Check for a bad battery. This is the most common problem for mobile devices like tablets, laptops and the like. Since the battery must be fully functional (at OEM specified outputs for volatage and current) for the device to operate (manuf. designed it that way to protect the circuits years ago), it is the most likley culprit. (FYI: I have two Lenovo laptops - one under the old IBM Thinkpad label and one newer Chinese Lenovo).
* Replace the battery with a new OEM replacement as I do not recommend after-market generics or refurbished)
2. Try a different power supply. Check the OUTPUT requirements on your existing power adapter (usually 5v) and locate a another adapter to see if it is the AC adapter. The only real issue you need to worry about is the OUTPUT voltage must match the original adapter to avoid damage. The current does not matter since the device determines how much current in mAH it requires so just concern yourself with the right OUTPUT VOLTAGE and the jack plug makes a proper fit. If a spare adapter is not available (Radio Shack sells a variable voltage adapter with a variety of interface plugs and they work very well for these issues) then try using the Lenovo adapter on another device. (I am assuming you do not have electronics tools or test bench and need to troubleshoot the old school way)
* Replace the dead adapter ensuring that the VOLTs are the same on OUTPUT as the original and the interface plugjack is the same size.

If, after doing the above two simple steps, consider that the MB (mainboard - motherboard) power supply is toast and the laptop is good for recycling only

hold the FN key and there is a button on the laptop that looks like a sun with an up arrow. while holding fn hit that button sometimes located on the f8 key. until it brightens up. let me know if this solved it for you

I believe the T61 is like my T60.
The "Home" and "End" keys will act to brighten or dim the screen when you hit them as you hold down the "Ctrl" key.

The screen will automatically dim slightly when it is on battery power, this is to conserve battery power. For maximum brightness connect the power adapter into the laptop.
On the Thinkpad laptops you can adjust the brightness by pressing and holding down the blue Fn key plus the Home key to brighten or the End key to dim the screen.