Need Help with Acer Aspire 4540 screen resolution

[ffilasta]

i have installed Windows 7 Ultimate in my notebook but screen is not in good resolution... i have tried install ATI Catatlyst 9.12 from device manager but it said there's something problem during installation. i hope i can run aero in my notebook... help me please...

my graphic card is ATI Radeon HD4200

 

[Rezandis]

i have meet this problem also,
my step is , in BIOS i set it tu IDE , and try to find the driver in Driver Manager in CD support Acer 4540 itself.