On 7 April 2014 09:49, gary smith <gazwebdes...@msn.com> wrote: > Hi Russell thanks for the reply I am using the power supply bought with > the pi also I have a powered usb tower so I have 2 power sources on it > > I agree with Russell that this definitely sounds like a power supply issue, so it is worth making absolutely sure.
When you say you have a powered USB tower (I assume you mean a powered hub?) giving you "2 power sources on it", what do you mean? The Pi will only take power from its MicroUSB power socket, not from any other USB port. That said, if you have other things plugged in to the Pi (including keyboard & mouse, but also external drives etc) then plugging them into a powered hub will help as it will reduce the power that the Pi needs to supply. What else do you have plugged in to the Pi? If anything, have you tried with just keyboard/mouse? On the power supply that you're using to power the Pi (that came with it) it should tell you how much power it is capable of supplying, eg 800mA or 1.5A. What does it say? (Note that "cheap" supplies, particularly those off eBay in my experience, rarely live up to their claims, although if you got one with the Pi it ought to be OK - what brand is it and where did you get it from?) Do you have any other power supplies you can try, eg from phones? The newer the phone the more powerful (in general) the power supply, again look at the current rantings on them to be sure. You can pick up a 2A Samsung power supply for ~£5 which should give plenty of "oomph" although you shouldn't be needing to spend more money, it should "just work". If you know anyone else with a Pi you could try borrowing theirs, sticking your SD card, power supply and other peripherals (keyboard/mouse) in and seeing if that's better, that would rule out a faulty Pi. Also of-course you can try their power supply on yours too. Do you have an alternative keyboard/mouse to try? (It's unlikely but I guess they could be drawing more current that they should be, and you'd probably never notice with them plugged into a PC.) Also try booting the Pi up without anything (other than power!) plugged in, and only plug in the keyboard and mouse once it's booted, doing it one at a time to see at what point it fails. I'd suggest plugging in the mouse first, and make sure you can move the mouse cursor before you plug ion the keyboard. -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) @ 13 Clarke Rd, Milton Keynes, MK1 1LG
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