ASUS K55A Power's on, black screen -- won't power off unless remove battery

[pinkglitter_xoxo]

My neighbors ASUS K55A laptop won't boot up, the power light is on, but it seems to be stuck on a black screen with no activity. It also won't power off unless I take out the battery. There's no reset button, I can't get to bios, I tried taking the battery out, pressing the power button then putting the battery back in and plugging it in -- with no results. I can't seem to find anything online about it. Thoughts? Thanks.

 

[pinkglitter_xoxo]

Update: I switched the RAM into a different slot and it turned on flawlessly. Put the laptop back together, and it stopped working. Then I moved the RAM again, and it worked after taking the battery out then turning it back on. Thoughts?