error merging partition with partition magic

I merged two partition with partition magic in my xp home edition
C and D
after merging, there was an error message
but I could not read all
can not bla bla batch file
press any key to reboot

I pressed any key and got the laptop rebooted.
but then It could not load the windows :(
just a black screen
nothing happen

I have no idea what to do
my data are in there

any one can help me with this issue?

thanks