why my hibernate stopped working.

It is not simply disabled, every time I launch it starts to stop the machine like if it was going to hibernate and suddenly, it returns to the login screen.

I began my investigation thinking that all was the fault of my MBR (master Boot Record), and and I suspected also Grub (the linux most used boot loader),

Armed with my courage, I began by an entire laptop backup, and  I try some tools and solutions to fix my MBR, and then everything goes wrong.

I used the UBCD (ultimate boot cd) to try to repair Grub, with no success, then I used testdisk to remove Grub, this time with success. I then restored my Vista and...

Hibernate still does not function.

I launch testdisk again and I have the idea to analyze my disc, my mbr was completely in disorder  with many ghost entries.

I thus decided to make a complete formatting of my disc with a new partitioning, I then restored all my partition one by one.
But at the end I can not succeed to fix one problem, how to make a good dual boot without Grub and without overwriting the vista new boot loader.

I sought on the Web and I found vistabootpro, it was for me best the solution.

I tried to use it but I found it a little hard to configure, then I went on their forum and I found a guide "how to dual boot vista and linux".

I start to read it and I fall on this warning "Do not resize the Vista partition during the installation of the Linux distribution".

The question is why?

it is simply due to the change in NTFS versions, no Linux partitioning program, nor standard Windows partitioning programs, can properly alter the Vista partition.

(But there is a solution Vista has it's own resizing program)

And I remembered that when I installed my Linux distribution the easiest and fastest choice was to resize my vista partition and then to install linux, but I did not see the effects at this moment,that took time to corrupt all my system.

The choice of the formatting with new partitioning was finally a good choice, and I realized by the same occasion that Grub was innocent, there was also no danger to overwrite the vista MBR.

I thus finished by reinstalling Grub, and I have now a nice dual boot system Vista/Linux with Grub and most important the hibernate function is now fully working.