Hi,
I bought a pi to test if it'll work in our environment and fit our requirements and it worked great.
So I bought 3 more.
The new 3, I can't get them to boot - I have a few different OSs on SD cards and none of them seem to work in the new ones, only the old one.
The only 2 noticeable differences I can see are that the old one has an "e1" below and to the left of the raspberry logo, which is missing on the other 3. and the new ones have "hanrun" and what looks like a model number on top of the NIC - the old one doesn't/
What happens on the new ones is that when it gets power, the red light comes on that the green ACT light flashes for a split second and then never comes back on again. Nothing shows on the HDMI screen at all.
If I start it up with the SD card removed, it the red power light shines, and the green ACT light holds a very dull glow.
All the SD cards (some I wrote and some I bought pre-loaded) work in the old one, but none in the new ones.
Any help or advice would be greatly appreciated.
https://www.dropbox.com/s/z179oxh2uxex9 ... .20.08.jpg