Ionic installation errors

I am unable install ionic in my system

i have node version 5.9.1
npm version 3.8.3

while i do " npm install -g ionic"

i am getting this error…

C:\Users\H123344>node -v
v5.9.1

C:\Users\H123344>npm install -g ionic
C:\Users\H123344\AppData\Roaming\npm
`-- (empty)

npm ERR! Windows_NT 6.1.7601
npm ERR! argv “C:\Program Files\nodejs\node.exe” “C:\Users\H123344\AppDat
\Roaming\npm\node_modules\npm\bin\npm-cli.js” “install” “-g” "ionic"
npm ERR! node v5.9.1
npm ERR! npm v3.8.3
npm ERR! path C:\Users\H123344\AppData\Roaming\npm\node_modules.staging\mkdirp
01a4155e
npm ERR! code ENOENT
npm ERR! errno -4058
npm ERR! syscall rename

npm ERR! enoent ENOENT: no such file or directory, rename ‘C:\Users\H123344\App
ata\Roaming\npm\node_modules.staging\mkdirp-01a4155e’ -> 'C:\Users\H123344\App
ata\Roaming\npm\node_modules\ionic\node_modules\npm\node_modules\mkdirp’
npm ERR! enoent ENOENT: no such file or directory, rename ‘C:\Users\H123344\App
ata\Roaming\npm\node_modules.staging\mkdirp-01a4155e’ -> 'C:\Users\H123344\App
ata\Roaming\npm\node_modules\ionic\node_modules\npm\node_modules\mkdirp’
npm ERR! enoent This is most likely not a problem with npm itself
npm ERR! enoent and is related to npm not being able to find a file.
npm ERR! enoent

npm ERR! Please include the following file with any support request:
npm ERR! C:\Users\H123344\npm-debug.log
npm ERR! code 1

I tried uninstalled and reinstalled node,npm but no luck…Can someone help me in this issue