I would like to upgrade my RAM but i dont know how much my mainboard supports. Its a Dell 0NJT03 board. I would like too know what speeds and sizes does it support as well as what brands of DIMMS am i looking at?

When I boot up my Alienware R4 as it is booting there is a 1 second long beep then proceeds to boot normally and have absolutely no issues with it. Except the only issue I have is command center randomly crashes with an error code but I always forget to write it down.

Three times so far today (and it's only 9:30 in the morning) my brand new M6500 has locked up. The video is completely frozen (no updates to clock or any other dynamic video). Keyboard and mouse are unresponsive. Pressing the power button works only if I hold it down to force a power off.