RE: Dell system restore and updating laptop
I understand that Windows 7 upgrade adviser has suggested that this system can be upgraded to Windows 7, however, Dell has not tested this system with Windows 7, and hence drivers for Windows 7 for this system are not available. There are drivers available for Windows Vista 32 bit version which you can install in compatibility mode in Windows 7 but they may or may not work. You will have to search the specifics hardware manufacturer website for compatible Windows 7 drivers.
If you still decide to proceed with Windows 7 installation, make sure that you back up the data as this process may lead to complete data loss. Please refer to the link http://dell.to/ZDfMyt for steps to install Windows 7. Once the Windows is installed refer to the link http://dell.to/12oPjsc for instructions of installing the drivers in correct sequence.
Hope this helps. Please reply if you have any questions.