I recently installed window 7 ultimate 32bit on my notebook, it work, how ever after a few month the system begin to restart repeatedly , so i try to recover back my earlier image of window, but unsuccessful, so i try to clean install again on the notebook but it fails and it shows error no 0x80070057 , it says cannot install on the partition, i tried the
diskpart method but again it fail... any expert here can help me

help me please, have an headache already trying to solve this problem.....thanks