My acer aspire 5630 laptop has a very dull/dark viewing screen it is fully charged and on high performance, help plz. Cheers G.

That is very unusual.
I would plug it into and external monitor to see what result is forthcoming. If it is fine, then a new screen may well be the requirement. If it gives a poor picture on the external screen then there is a motherboard issue. I would take it to an authorised Acer repairer for service.
Hope that helps.

Memory Upgrade for Acer Aspire 5630-6760 Notebook (DDR2-533MHz) Laptop, the Acer Aspire 5630-6760 Notebook (DDR2-533MHz) Laptop takes the Memory Type, and comes installed with 0MB of Memory. You can upgrade your Acer Aspire 5630-6760 Notebook (DDR2-533MHz) Laptop to up to a maximum of 4GB Memory, the system has 2 (2 banks of 1) to install Memory, already with 0MB standard Memory installed. For best Laptop performance use the maximum amount of allowed Memory per slot for your Laptop.

check inverter board.

Solution? - not sure yet but having read solution by Hector_ahab, tried various F() buttons in conjunction with Fn button. Pressing Fn with F6 switches between black and normal screen on my Acer Aspire 5920. Fingers crossed!

are you getting blue screen are does it shut off

Are you triply-sure the battery is fully charged and/or the charger is working?

If the light is green the battery is fully charged ...would be orange if it was still charging .....

along the bottom row of keys there should be one lable function, along the top row (usually the F- keys) there will be one that looks like a star and another one that looks like a black star, hold the function key down, click on the whiter star and the screen should get brighter.

The problem is with your Switch. Contact Service Center. It is not sounding a big problem.

You press the function (Fn) key and the left/right arrows, not the Ctrl / Alt, shift buttons