How to Detect your invisible Partition Hardisk on Windows OS

On few days , my friend came to me , he had trouble with his notebook after failure on UBuntu OS Instalation, the partition of its hardisk unable to open , read or to save some stuff, then I try to detect the problem . Firslty chek the partion if it is can be open by clicking on the drive manualy :

  

E: 

But its seemly cann't open so I try the second step :

 Open the Disk  Management

right click one of the partition that can not be opened and then format it so its ready to use

Linux Kill my Win 7 but EASEUS Data Recovery safe me

Two days Ago I had an Linux lessons class, the lecturer told me that we must dual system on  our Notebook , we try with the lessons, but some of mistakes was happened on the time starting on instaling UBuntu 11.04 . it is small try but cause some big mess, my data on HD at least 160 GB was lost the same time my Win 7 lost , uhh........what a..... but im not give up , i try to look up on the partition i've made on UBuntu but it wont recognize also , I begun  frustated , the next day  I try to ask to my friends , after they examine my notebook they said that it was totally data destruction with OS destruction by my self cause configuring UBuntu not at the right way , but they give me solution, try use this EASEUS data recovery, may be its can survive some part of your data files, thanks god , its work but not all data is back , but its ok