I bought a Raspberry Pi over a year ago but only just tried to get it working this week but it will not boot. The red light is on and voltage is fine. When I plug in my SD card reader the blue light on the reader lights up so it is being seen by the Raspberry Pi.
Instead of mucking about, I have bought a Raspberry Pi 2. The Pi 2 when powered up has the red light and the green light on full - no blinking but my SD card reader has no blue light. I checked the voltage and I am seeing 5.33 volts.
As an aside, when I first switch the Pi 2 on the blue light on my SD card reader flashes on briefly then goes black.