Specs as follow: Operating System Genuine Windows Vista® Ultimate, Genuine Windows Vista® Business, Genuine Windows Vista® Home Premium, Genuine Windows Vista® Home Basic, Processor & Cache Memory Intel® Core™2 Duo Processor P8400/ T6400/T5900/T5850 : 2.26 GHz - 2.16 GHz, 667 MHz FSB, 1MB L2 cache.; Intel® Pentium® M Processor T3400 : 2.16 GHz 667MHz, 1MB On-Die L2 Cache (only with WLAN agn) Intel® Celeron® Processor T1600 : 1.66 GHz 667 MHz FSB, 1MB L2 cache. Chipset SiS M671DX + 968 Main Memory DDR2 667 MHz SDRAM, 2 x SODIMM socket for expansion up to 4GB SDRAM *Due to the 32-bit operation system's limitation, only 3GB will show up with a 4GB memory. The 64-bit operating system will not have this issue. For more information, please check Microsoft's support site: http://support.microsoft.com/kb/946003 Display 14" HD (1366x768) LED backlight ColorShine,Color-Shine (Glare-type) Video Graphics & Memory ATI Mobility™ Radeon® HD 4570, 512MB VRAM FSB 667 MB Max. Anyone has any idea how to downgrade this???? i need urgent help...thanks!