Loop during clone operation

Dear all,

this Friday afternoon I have finished the installation of a new pc. From within Winodws 7 64bit I picked the clone option within TrueImage 2013.

True Image told me it needs to reboot the machine to complete the process.

Now I´m stuck, the message reads :
GPT-formatted disk
Legacy boot not supported
Press any key to reboot.

Is there any chance to break the process and get the machine booting ?

Thanks in advance !