Just installed HIS Radeon HD 5770, feel I've forgotten something

[RayRay]

hi

just installed his radeon hd 5770 on gigabyte ga-ma785gt-ud3h
the mobo have integrated ati radeon hd 4200
bios is award

os is win 7 home premium 64 bit

first i putted the video card in, installed the drivers to the card, restarted, and then this:

the easy tune 6 came with the driver cd, when i start this app up it shows:

error could not load device driver

the windows explorer has started to crash when i go into controlpanel and shows this:

Problem Event Name: APPCRASH
Programname: Explorer.EXE
Programversion: 6.1.7600.16450
Timestamp Program: 4aebab8d
Name on the wrong module: StackHash_836d
vrongmodulversion: 0.0.0.0
Timestamp error module: 00000000
Exception Code: c000041d
Unntaksforskyvning: 0000000000000000
OS-version: 6.1.7600.2.0.0.768.3
Locale ID: 1044
Additional Information 1: 836d
Additional Information 2: 836dd22340f6ce5409ccd3e56c4c52f1
Additional Information 3: 0f51
Additional Information 4: 0f5128fc9e09d25ed0fd429bc8c01d08

and the taskbar is grey, not black as preffered.
edit: no the taskbar is okay, us hide function and firefox made me wonder

what have i do wrong?

 

[EXCellR8]

make sure you have uninstalled the previous display drivers and that the integrated graphics controller, the HD4200, is disabled in BIOS.

 

[Ritwik7]

Download the latest Catalyst 10.4 WHQL drivers available at Game AMD. You may download the entire Catalyst Suite or the display driver and Catalyst Control Centre individually. Download and run Driver Sweeper. Remove all traces of ATI drivers from your system. Reboot the PC and install the downloaded drivers.

 

[dividebyzero]

Did you install the AVIVO driver (codec) package ?
If you just load the driver you wont need it, but if you load the whole CCC package you'll need to install at AVIVO codecs.
I wouldn't have thought it would crash the sytem though.

 

[RayRay]

alright, thanks for the hel and guidance guys,
the hd 5770 is up and going as it should.
thanks again.