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Samsung NP300E5A 15.6 Laptop i3 2.4GHz 6GB 500GB DVDRW Questions & Answers
Why is screen blank?
You never said if it worked with external monitor. You also didn't say if you tried the [fn]+[Fx] key combination on the keyboard to try and switch displays.
But, if you look at the screen closely, at an extreme angle and can faintly see the graphics then that means the backlight has blown out. For the displays with LED backlighting it's usually just a wire or circuit to repair. For the screens with CCFL (fluorescent) lighting it's a simple matter of replacing the inverter board.
My computer cursor keeps jumping to wierd places. Almost impossible to use.
i have seen his before but cannot remember the cause.
start by updating ur display drivers
then boot into safe mode to see if it does it there.
If it does not do it in safe mode it may be a problem background program. That requires stopping programs 1 at a time till u find it.
do a serious virus scan.
POWER ON PASSWORD
If you forgot your power-on-password you can jump it and clear out the password for the BIOS
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