Unfortunately there are no "new" drivers for your legacy Arrandale system.
Drivers at DELL are 6 years old
Latest generic driver is DriverVer=01/30/2013, 126.96.36.19993
- 64 Bit: https://downloadmirror.intel.com/22520/a08/Win7Vista_64_152258.zip
- Release notes (64 Bit):https://downloadmirror.intel.com/22520/eng/releasenotes_gfx_2993_64.pdf
If you have updated to Windows 10 there is only the compatibility driver 188.8.131.5200 from Microsoft Update Catalog
Intel does not support Arrandale under Windows 10 according to Supported Operating Systems for Intel® Graphics Products