I got a used Raspberry Pi Model B 1GB Version. I am noticing something weird, even without a SD Card connected to it, after powering it on and connecting HDMI I see the rainbow splash screen. Both red and green LEDs glow solid and green never flashes. What could it indicate?
I got a used Raspberry Pi Model B 1GB Version.
I think you mean a quad core Pi 2, sometimes referred to as the "Pi 2 model B" or just "2 B" (or twobee).
Both Red and Green LED's glow solid and green never flashes. What could it indicate?
It indicates there is no card in the SD card reader. The source Jacobm001 refers to actually predates the 2.1 The BCM2835 models, including the B+, will start up with only the red light on in this case. The BCM2836 model (i.e., the 2 B) will start up with both lights on steady.
It is a little odd you get an HDMI signal, but if the Pi otherwise seems to work, nothing is broken.
1. Except for a brief note just added by me. I've observed this with the 2 as have various other people here over the past year.
According to the troubleshooting guide, it sounds like there is something wrong with the SD card reader. My guess is the SD reader is broken in some fashion if a working card is not read properly.
Apparently my source predates the RPi 2, and may not be accurate for the newer devices. I will leave the answer, however, for anyone having the same problem with the A, A+, B, or B+ models.