Black Screen... I have a HP dv4-2045dx laptop. Was working fine last night. Today I tried to upgrade the RAM and then I got a black screen. Swapped back to the old RAM, same thing. Tried one stick, both sticks, different positions, even tried the original RAM from a week ago before the first successful upgrade. I can hear the hard drive and fan. Can't get to bios, safe mode, nothing. LEDs for number lock and caps lock flash once every 3 seconds indefinitely. Can't seem to find that code anywhere. Tried everything I could think of and then some. Removed the CMOS battery for hours, reseated the RAM a bunch of times, tried discharging the capacitors by eliminating all power sources and holding the power button down for 15 seconds, 60 seconds, 90 seconds, tried an external monitor, took it apart down to nothing, couldn't see anything physically wrong, or anything disconnected. Tried booting it up with just the motherboard, RAM, and screen, nothing but fan, hard drive sounds, and black screen. Can't tell if I killed the motherboard by not wearing an antistatic strap or killed the RAM slot with a bad fit. I'm stumped. I couldn't leave well enough alone. I just got it running too like 2 weeks ago. Had a bent pin where the hard drive plugged in. At that time it would start up and it would tell me can't see the hard drive. Those were the good ol days. Any input would be greatly appreciated.. Thanks.