Ntldr is compressed press ctrl alt del TO RESTART

OK, download your version, and burn it to DVD/USB stick and (at this point u are just repairing, so u don't need to use your own serial key)

Let me know if it worked out.

Insert the installation DVD in your system and start the pc above.
Click Repair your computer.
Then click on Load Driver.
Go to Computer.
Right click on the partition your installation previously compressed> Properties.
Then uncheck "Compress drive to increase space available".
Then close all windows to restart the computer.
http://en.kioskea.net/faq/4525-windows-vista-and-7-bootmgr-is-compressed#q=Ntldr+is+compressed+press+ctrl+alt+del+TO+RESTART+win+7&cur=1&url=%2F