laptop shuts off in ac
laptop Acer aspire 6935
config-intel core 2 duo.3gb ddr 3 ram,320 sata hdd,nvidia geforce 9600 gs turbo
orginal os -vista,now i had intalled several including ubuntu,xp,7.
at present -vista itself
browser-IE and firefox
System working properly in safe mode,no problems with ac power or battery power
In normal mode system shuts off without warning .it may be during boot up (mostly) or while operating
Battery is charging well, performing good.
Some times system charges to fully while it is in normal mode.
Problem exits even after cleaning fan and heat sink.