Operating System: Windows XP Professional Service Pack 2
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: G31M-ES2C
BIOS: Award Modular BIOS v6.00PG
Processor: Intel(R) Pentium(R) 4 CPU 3.00GHz (2 CPUs)
Memory: 2046MB RAM
DirectX Version: DirectX 9.0c (4.09.0000.0904)
so i bought this card ...
Card name: NVIDIA GeForce 9400 GT
Manufacturer: NVIDIA
Chip type: GeForce 9400 GT
but i got a problem when using ALT+ TAP to switch and thing else or while switching guest user ... SRO went like this


so i thought the problem come from the graphics card so i bought this one
Card name: ATI Radeon HD 4650
Manufacturer: ATI Technologies Inc.
Chip type: ATI Radeon Graphics Processor (0x9498)
DAC type: Internal DAC(400MHz)
but the same problem .... so i think this is not a graphics CARD error ... can sum1 help me






