If you are experiencing issues with your Dell Streak, then a hard reset back to factory original may be the way to go to fix common or uncommon problems. dell streak restore back to factory fix issues  

To perform a hard reset

Make sure device is off  Hold the Home Button + Power Button and Volume Up Button at same time. Now select Factory reset option. Now your device will automatically reset itself and restore to factory version.  

To do a soft reset

Open the settings icon. Press the privacy button. Select the factory restore option. Press the restore button. At last press the done option.