I have an AVIC F900BT and I have a problem, try to boot my machine, but in a few seconds the screen light goes off and only the lights of the buttons are lit. I'm trying with an SD tesmode folders and backup "my flash disk" repair the device, but it does not enter in windows I do not know how to fix, there are problems in the forum the same as mine, but all I see when entering the TESTMODE rebooted. Please help me! Sorry for the english, I'm Brazilian!

Now all the lights are going off, only the fan is on, I do not know what to do! Please!

Try reinstalling windows and doing an update.