it happened after I formatted my computer from its previous WIndows 7 Home Premium 64bit and upgraded to Windows 7 Ultimate 64bit.
Hi I cannot install the driver for my ATI Mobility Radeon HD 5650. My laptop is an Acer Aspire 3820TG with switchable graphics. When I attempt to install the driver, no matter which driver I use, be it the ATI latest driver or Acer's driver, neither work. I cannot install the driver for Intel HD Graphics either because "this computer does not meet the minimum specifications". I changed the BIOS settings from Switcheable to Discrete and back, but both don't work. In Discrete mode, my HD 5650 apparently is unable to start. Also, in both modes, my HD 5650 appears as "Standard VGA Adapter". I really want that driver installed, but am up in arms over how to do it. Any help would be greatly appreciated. My laptop specs are: Core i5 520m, 4GB DDR3 RAM, 1GB ATI Mobility Radeon HD 5650 with switcheable graphics technology.