Computer Flickers while playing Wow or when its not on a power bar.

[Exhorder]

When ever i play world of warcraft my screen start to flicker .. the whole screen to be exact. This only happens when i do not have my acer aspire 5741-5193 laptop plugged in, now im having problems with it disconnecting it self from the power source when ever it reaches 90% or above. is there anyway to fix this? i don't think its my graphics card since when it is plugged in it work's perfect and fine.
heres my setup .
intel core i3 -350m proccesor cpu
2.26ghz, 3mb l3 cache
intel hd graphics up to 1755 mb dvmt
64-bit operating system

if you have anyway to fix this il forever love you.. peace.

 

[COLGeek]

When your system runs on battery power, it operates at slower speeds to conserve power. Lower speeds means less performance and can cause issues like you are indicating. I am not sure you need to adjust anything beyond gaming when connected to AC power.