You have a problem whit RAM, set 512 and VM Heap to 16. And the android emulator will work.
The virtualization in Windows doesn't support 1024M RAM.
Or you cand change the config file:
avd.ini.encoding=ISO-8859-1
hw.sdCard=no
hw.device.manufacturer=Google
hw.mainKeys=yes
hw.lcd.density=320
hw.accelerometer=yes
hw.dPad=yes
hw.cpu.arch=arm
skin.name=720x1280
abi.type=armeabi
hw.device.hash=-708107041
hw.trackBall=no
hw.device.name=Galaxy Nexus
hw.camera.back=emulated
hw.sensors.proximity=yes
hw.battery=yes
disk.dataPartition.size=200M
image.sysdir.1=platforms\android-10\images\
hw.audioInput=yes
hw.sensors.orientation=yes
hw.camera.front=emulated
hw.gps=yes
skin.dynamic=yes
skin.path=720x1280
hw.keyboard=yes
vm.heapSize=128
hw.ramSize=1024mb
Cheers,