I recently took my laptop apart to test whether my SSD was working. I completed what I needed to and rebuilt my computer using the original Hard Drive. Now it won't power on. Regarding common problems that cause this, I already reseated my RAM, held the power button for 30 seconds to get rid of residual power, checked all my connections including the power connection ribbon, made sure the hard drive was seated correctly, and tried to power on with the battery out but the A/C adapter plugged in. The A/C adapter light does NOT go out when plugged into the laptop. As a side note when i have the A/C adapter plugged in with the battery in, the charging light on the front of the laptop comes on just fine. I am frankly out of ideas and would appreciate any and all help.