i am having problem with android avd manager i can not open emulator the android virtual device i am new in this this following error i am getting

D:\Users\sandip\AppData\Local\Android\sdk\tools\emulator.exe -netdelay none -netspeed full -avd Nexus_5_API_22
Creating filesystem with parameters:
WARNING: userdata image already in use, changes will not persist!
Size: 69206016
WARNING: cache image already in use, changes will not persist!
Block size: 4096
Blocks per group: 32768
Inodes per group: 4224
Inode size: 256
Journal blocks: 1024
Label:
Blocks: 16896
WARNING: SD Card image already in use: D:\Users\sandip\.android\avd\Nexus_5_API_22.avd/sdcard.img
Block groups: 1
Reserved block group size: 7
Created filesystem with 11/4224 inodes and 1302/16896 blocks
emulator: WARNING: Requested RAM size of 512MB is too large for your environment, and is reduced to 384MB.
emulator: device fd:600
HAX is not working and emulator runs in emulation mode
emulator: The memory needed by this AVD exceeds the max specified in your HAXM configuration.
emulator: AVD RAM size = 384 MB
emulator: HAXM max RAM size = 0 MB
emulator: You might want to adjust your AVD RAM size and/or HAXM configuration to run in fast virt mode.
creating window 43 59 329 583
emulator: emulator window was out of view and was recentered