Windows 7 Installing deletes partition D:\

[AhmedZeedy45]

Installing any software deletes a partition and says:

Then I can reopen installation and it works (after it deleted the partition)

After restarting I can find the partition again...

 

[Neemobeer]

Is D actually a partition or a disc drive?

 

[AhmedZeedy45]

Primary Partition, created in a part of the hard disk that when I edit it with Windows, Windows dumps memory...

 

[Neemobeer]

Ahh the person with AOEMI. Sounds like you have a lot of issues with this system. If it were my computer I would have probably wiped it and did a clean install. Granted I like trying to fix stuff myself, but when it starts being one issue after another it's probably not worth the effort and time to troubleshoot.