Im guessing due to needing batteries that your Guitar is the Wireless type ?!
Have you correctly Synchronised your Xbox 360 with the Guitar controller ?
to do this, Turn on the Xbox and Guitar press the round "sync" button on the bottom of the guitar, next to its Ethernet port, and also press the small round sync button on the Xbox 360 (located to the left of the memory slots on the front face) at the same time, the rings of light on both the Xbox and the guitar will Turn in a clockwise motion letting you know they are synching, after that the Xbox will assign the guitar to a controller slot. then it should work.
If this doesn't work then im afraid your guitar may have a faulty wireless chip, which would require you to get a replacement.
hope it gets sorted !
you have mentioned that ur phone is charging and not getting on. that means ON\OFF path is having problem .due to dry solder of ON\OFF switch its happening. please resolder it and then check it
who told you its not charging ??? If its like that then please do me a favor... tell me model no. & make of your laptop and i will tell you whats it really means by such flashing lights... ok ?
Remove battery and power
Remove memory in lower socket, the one on the system board and try reboot with just power cord. May have bad socket
I had this problem with mine so lets start by saying there are solutions!!
Logitech state the battery cannot be replaced. It CAN. You can purchase the exact battery from ebay. Its a simple case of taking the orange backing off, removing all the screws (not forgetting the one hidden under the bluetooth address sticker) and popping the keyboard apart. From there, flip out the battery, pop in the new one, put it all back togeather and voila.
Now if you dont care about your warrenty or it has none (as does mine) there are two contacts on the back of the keyboard which connect to the charger stand. Having took the keyboard apart, solder a wire onto each contact and then solder onto the battery connection contacts taking care to match red to red and black to black. Every time the keyboard is docked it will charge until you remove it. One other thing to note is that the low battery will keep flashing at you now and again (according to logitech you have about 10 mins use left until battery gives up) I have been using it for over 5 hours like this and its still going strong.