Hi to all!

Just bought a Honda Accord 2.4 2004 (driven 73000 miles) and there seems to be a problem with the system mentioned above. Navi seems to work fine, when it is working! So, it goes like this: when you turn the key to position I and II, the system starts up, and you're able to use Navi and touch screen as general for controlling radio etc. But when you start up the engine, the screen goes black and nothing happens. After you shut the engine off, and start again, nothing happens at all...screen just stays black...but sometimes it will come alive until it tilts again in actual start up. "Awakening" seems to happen easier when you wait a while before a new try. Once or twice system has managed to get through the starting phase and everything seems to be OK. We've thought that the problem can't be any major one, but have anyone have a clue where to start ?

Thanks!