Amiga 500 won't detect expansion/hard drive

[Sillisone]

Hi, I have an Amiga 500 that I'm trying to use a Dataflyer Express expansion with. It has 8mb of ram installed and is the version with the IDE controller.

Whenever the expansion is plugged in, the amiga starts with a gray screen that stays for a while before it asks for the kickstart disk and boots normally.

It doesn't matter if a hard drive is in or not. I am not sure how to tell if the ram is working correctly. If I have a hard drive in (the smallest I have is 6.4 GB, might be a problem) nothing changes.

The expansion came with a floppy labelled "auto install software" but it doesn't detect the drive either.
 
Do I need a smaller hard drive, or is there some other issue? Since it didn't include the manual, I have no idea about how to use this.

[Sillisone]

I have tried plugging in the external power, didn't change anything. But I forgot to mention that the hard drive spins for a bit on startup, as well. I don't know how to check if the ram is working, so I haven't done that. Though the ram looks properly installed. As for the pin config,near the external power supply in the back, there are six rows of pins lined up.

 Each row has two pins and rows 2,5, and 6 have a jumper connecting the pins in the row. At JP5 the board says KS 1.2 = OFF and KS 1.3/2.0 = ON. There is a jumper there, and my amiga has KS 1.3, so that doesn't seem out of place. At JP2 there are 3 rows of pins, each row again has two pins.  Each row is labelled. They are OPT, BASE, and SIMM. On BASE and SIMM, there is a jumper only on one pin each, the ones farthest from the ram.

[Sillisone]

I followed TomJ's suggestion and took the ram out to see if it would boot - it did. I put the ram back in and turned the amiga back on. It still started up. I guess I overlooked something that should be tried first - reseating the ram. Thanks for the help, I probably wouldn't have figured it out on my own. Now I'm going to go play Lemmings.