Zombie Mode and F11 Error

Ionelyday

Mainboard : ECS A960M-MV
Chipset : AMD 780
Processor : AMD Athlon II X2 250 @ 3000 MHz
Physical Memory : 4096 MB DDR3-SDRAM
Video Card : AMD Radeon HD 5570
Hard Disk : Seagate ST500DM002-1BD142 ATA Device (500GB)
DVD-Rom Drive : HL-DT-ST DVDRAM GH24NSB0
CD-Rom Drive : DTSOFT Virtual CdRom Device
Monitor Type : Philips Philips 190VW - 19 inches
Network Card : Realtek Semiconductor RTL8101 PCIe Fast Ethernet Adapter
Operating System : Windows 7 Ultimate Professional Media Center 6.01.7601 Service Pack 1 (64-bit)
DirectX : Version 11.00
Windows Performance Index : 5.9 on 7.9


Errors :
+Zombie mode (only Devastated City) error.I see 'send error report?' and legacyshader.fxo error!
+I press F11 and see send error report? Despite this error, you can continue playing

This photos from my errors.