intel macbook wont boot please help

hey guys, my girl friend has a mac-book and the battery died so we were using it without the battery in, as a desktop and now it will not boot at all when u press power the disk drive boots up then nothing, we tried holding option R T and it will boot to the log in screen but the moment u take your hands off option R T the screen just goes black, the only thing i could think of was that her HD failed, its only 2 years old and in good shape so i dont see why the logic bored would be bad, any ideas? thanks

we have tried all the options under the stickies and still nothing anyone?

Welcome to the Forum. Try doing a SMC reset see if that helps.

I'd say hard drive before making the leap to logic board. What happens when you boot into Single User Mode? (Cmd + S).

Corbab said:

I'd say hard drive before making the leap to logic board. What happens when you boot into Single User Mode? (Cmd + S).

Click to expand...

the only time it will actually boot to a screan is the option r t other then that it is nothing but a black screan

where salesman

4thgradedropout said:

the only time it will actually boot to a screan is the option r t other then that it is nothing but a black screan

Click to expand...

we got it to boot with command s, a whole bunch of sentences came up and then red and green pixels just started coming across the screen

It does sound like the graphics chip which is incorporated into the logic board.
Have you tried running the Apple hardware test? Intel-based Macs: Using Apple Hardware Test

we cant run anything because we cant get anything to boot, the moment u take your finger off a key the screen just goes black again