question about cancelling vista installation

hello

i have mobile pc with vista basic and lately my pc got into loops of restarts when i boot , so i booted from the vista cd and it asked me to choose language and choose partition and it didn't give me any recovery option and the installation started right after , so i cancelled it in the first 2 seconds and my question is:

did i lost my data on the c drive? (i cancelled it very fast)
now when i boot the pc, i am getting "bootmgr is missing press alt ctrl delete to restart".

You could try a repair install but it does not take long to lose a good chunk of your data.