c550 won't turn on

The battery might be toast or just drained down to an unusable level. Does it work with the car charger or USB instead of the AC charger? I read that some Nuvis will only work/charge on the USB if the battery is severely drained. Just leave it charging for a day or two and see what happens. If it was only a few months, that shouldn't be long enough to cause the battery to go bad, unless it was completely discharged prior to going into long term storage.

If that doesn't work, they seem pretty easy to crack open and install a new battery ordered from the 'net.

He is correct, you need to try to charge it via the usb port (not the cradle) and see if that works for ya!

Thanks for all the suggestions. I kept it plugged in. Shook it a few times. Left it on my kitchen table for a day. Finally, when I plugged it in again, it turned on!

I'm thinking the battery was loose, or it lost it's charge. Either way, it works now. Thanks!

was probably extremely dead. Letting it charge for a while brought it up to a level where the machine would turn on.

Agreed. Don't think it was a loose connection, but rather a very dead battery.

My C550 drained to the point I had to pop the face plate off and reset it

Never had a C550, just being curious: why did you have "to pop the face plate off" to reset it? it seems that all units do allow a hard reset from the outside... but I may be wrong about.

c550 reset button is under the faceplate

Yeah all C3xx and C5xx series have their reset button under the faceplate.

Thank you for bearing w/me!

No problem, it is a reasonable question if all you know are Nuvis