Acer VN7-591G black screen if turned on battery power

avien
avien Member Posts: 2 New User

Hello,

I have an annoying problem with my Acer VN7-591G. I am using windows 7.

If I start it with power supply everything is fine.
But if I will disconnect power and try to turn on VN7-591G it will only boot up to moment after successful login. After that there is only black screen. I think there might be a problem with slow CPU speed, but I do not know how to determine it. Also there is no difference if it booting from completely off state or from sleep mode. No power supply and the booting time means reset :/

Anyone can help me with this?

Best Regards,
Avien