hi everyone i m writing from turkey i got big problem with my n900 when i connect n900 with pc after i will take operation failed message and i cant take any pics and also i will check reboot or any other thing i cant fix it i will go mobile repair shop he said to me this n900 s product key deleted after i pay 50 us dollar pay and problem fix it but when i come to home and connect n900 usb via pc problem get continue:(((in turkey people dont know anything about n900 i need your help

I can't get the exact nature of your problem, but if you are having issues with the camera not being able to take a picture with the "operation failed" message, open the camera app by sliding the camera cover, in the bottom left hand corner, select the memory card icon, and for Memory in use, select Internal storage. If Memory Card is selected, the camera can't write to that memory area, and the operation will fail and continue to fail.
This issue does crop up from time to time and has to do with the permissions on the memory card.
Please let me know how you go with this issue, and if this resolves it. If not, try to be a bit more concise with your description, even if you have to use google translate or similar application.
Regards.