I have a Lenovo W530 that had a single 8G RAM stick under the keyboard. On the bottom of the laptop, there is a panel you can remove, and I installed 2 more 8G sticks, for a total of 24. I'm waiting on the 4th stick.
When I power on the computer, the disk spins up briefly and the camera light turns on. Then nothing. I can hear a faint hum, maybe from the hard disk or a fan, but it's not doing anything and the screen is blank. I'm hoping it's counting and verifying the RAM, but I'd expect to see some output from the BIOS or maybe a beep or something.
If I take out the memory, it boots normally. When I put it back in, I see the same behavior. I've waited about 15 minutes so far before I took out the memory. Am I not waiting long enough or do I need to add a stick under the keyboard?