In Short: I have had the Pi for less than a week. I have used it twice successfully, but now on booting it starts up but the mouse and keyboard are dead. Help?
Nothing was changed between when it was working and now. On booting the red light is on and the green light above it, that's all. I think I recall more lights coming on before this problem.
Background...I managed to get the wheezy file onto a card and booted the machine ok and set it to start the graphical interface upon booting. I booted the machine a couple of times on this occasion.
2nd day looked at the machine a little - scratch and browser. Noticed no sound coming through the HDMI linked TV. So tried to find the my WD NAS to pull an audio/video file, but upon clicking on the windows share icon got a "its not mounted" error so was stuck. It was booted successfully 3-4 times on this occasion.
Spent a few hours trying to work out these two issues by reading online the main PC over the next few days then today had time to try a solution to these issues. However upon booting I had no mouse functionality. (Am using a logitech wireless), So I found another wireless set and that didn't work either. So I tested the original mouse/keyboard on my pc - both worked fine. Then I took a wired mouse and keyboard and started the Pi with these, same error, no response. I noticed the wired optical mouse had no red light on so thought it must be a problem with the Pi and came online to find help.
Things tried: I have read lots of stuff online where the power supply is mentioned. The supply I am using says "output 5.0v =0.7A". I even put the Pi in the fridge for half an hour then tested it again (v odd advice), no change.
Have a basic multimeter (analogue display) which took the needle directly to 5.0v when testing TP1 - TP2 as suggested on one site.
No new software has been installed (don't even know how to do that) or changes made to the Pi/Wheezy SD card.
What I don't understand is why it worked and now does not. Nothing's changed in the set up, would trying to connect to the LAN be an issue? I turned it off once by unplugging it rather than clicking on shutdown - would that be an issue? But I think that it worked ok after that and it seems unlikely.
Please help - Linux knowledge = ZERO (hence the purchase). Some general computing understanding (from my BBCmicro days). Excuse the full story but I don't know what is relevant or not.