black screen after copying file

Hello,
I got a warning for low space and I clicked to empty the trash then I tried to copy one file to my PC
the PC died with black screen
When I reboot it , I can see Mageia loading then it goes to black screen
I tried to connect with rescue CD , to delete some files or at least to save some important files
I couldn't mount sda2
Is it possible to save some files or fix it?
Many thanks in advanced
I got a warning for low space and I clicked to empty the trash then I tried to copy one file to my PC
the PC died with black screen
When I reboot it , I can see Mageia loading then it goes to black screen
I tried to connect with rescue CD , to delete some files or at least to save some important files
I couldn't mount sda2
Is it possible to save some files or fix it?
Many thanks in advanced