Mountain lion flashing apple bar/flashing wallpaper/no dock?

i have a macbook pro that i bought april 2010. i bought ML from the app store about a month ago. im now having a few problems.
the battery died while my daughter was watching netflix so she plugged in the charger. i pressed the power button and left it. i walked away for a while and when i came back the screen was black. i assumed in sleep but it was off. i double checked the charger was correctly attached. OK. and pressed the little button on the side to see the battery level. 5/8 lights lit up so that was OK. i figured it a fluke and tried to power on again. it got to the grey apple screen with spinning gear and a progress bar came up at the bottom. there was no progression in the bar and about 5 seconds later the computer was off again.
my daughter THEN tells me that when the screen went black the first time she pressed a bunch of random buttons on the keyboard. i dont know if that can do anything or not.
i then tried to start with option. it was the only thing i could think to try, i used to have windows partitioned on my HD but erased that because i didnt use it and just had a small partition that i had time machine on.
i chose to try to restore with a time machine back up. it was seeming to work. restarted computer and signed in with my primary/admin account. it was moving very slow but was moving.
-slow startup
-computer seems lagged. im seeing the spinning color wheel after every click.
-in my admin account the dock is gone. i tried to change the settings to disable the dock hiding so it was always at the bottom of the screen...still no dock.
-my wallpaper and the right side of the apple bar at the top of the screen (wifi/clock/battery/etc) was flashing every few seconds on and off.
i tried to boot into safe mode to see if that would do anything.
i held shift key right after power button - gray apple screen/spinning gear. -power off
i held the shift key as soon as the start up chime started until the apple. -gray apple/spinning gear-no change for 2 hours. forced shut down with power button.
i waited until the end of the chime, held the shift key until the apple. -power off
after that i couldnt power on at all except in recovery mode. regular start up would take me to chime/apple/spinning gear/progress bar then shut down.
restored with time machine back up again. got to login screen and tried to login with my second/guest account.
-very slow/lagging/spinning color wheel
BUT the wallpaper isnt flashing to gray and the dock is in place.
but the right side of the apple bar at the top of my screen is flashing. i havent tried to log out of this account to try logging into my admin account yet... what should i do? any ideas?

Is this problem only affecting one user account?
Does booting in safe mode (hold down shift key at boot time) get you in?

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alamzeb wrote:
Hi this is alamzeb , i have purchased OS X mountain lion from apple store and installed it on my macbook with the expect ion of making my macbook faster but it become more slow by installing os x , how can i solve this problem
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