Remove the current Drivers - then install the xp Drivers you found in compatibility for Xp SP2 and as administrator. Best i can think of if you don't get Better/ Newer drivers.
Operating System Windows 7 64 bit
Computer Type Built my own
OS Service Pack SP1
Internet Explorer Version 9
DirectX Version 9, 10, 11
CPU Type and Speed AMD Phenom II 955 @ 3.8Ghz
CPU Cooling Hyper 212+
Motherboard Chipset Gigabyte 890XA-UD3
System Memory Type 6GB DDR3 1333Mhz
Video Card Type and Speed xfx ATI HD 5770
Power Supply Unit (PSU) Corsair tx650
Computer Monitor 22 inch Acer
Hard Drive Corsair Forces Series 60 SSD, 1TB Samsung Spoint 6Gb/s, 2TB Spinpoint
Optical Drives LG DVD+-RW, Sony Blu-ray
Network Adapter Realtek 1Gbit
Printer HP Deskjet
USB Controller USB 3
Anti-virus Software Avast Free + Comodo Firewall
Productivity Suite MS Offie 2010
Computer Skill Level Self-Taught Expert
Windows Experience Index 5.9