is the button near the reset hole? possibly the button is somehow pressing the reset switch, possibly stuck somehow. Other than that try a hard reset, instructions below.
Put your stylus in the hole in the lower left corner where it says “Reset” Soft Reset will reboot your device just like when you reboot your PC. No data will be lost, under normal circumstances that is.
Hold down the Power button (Top Right corner) and at the same time put your Stylus pen in the hole where it says “Reset” (Lower Left corner).
Hard Reset will delete all data you have put on the device, Programs, Settings, Mail, SMS, MMS, etc., so be careful and make a backup before doing this.
After a hard reset, you will have a complete clean new install of Windows Mobile on your device.
Things that are not deleted
- Data on \Storage Card
- Data in \Storage folder