Help!!!!

I have a samsung r510 laptop and have installed windows 7 64 bit edition. All was good but now when i attempt to boot up it goes to a black screen and nothing else happens. When i attempt to boot in safe mode it hangs at classpnp.sys. I have tried using the system repair on the hd and on the dvd but nothing works. I have removed the hd and connected to my other laptop because i want to transfer some photos but all it does is freeze my other laptop. I have also tried to do a clean install but all it does is hang. Im pulling my hair out!!! Any ideas????

Try installing the x86 version of Win7, this should sucessfully get installed, and then transfer the necessary files. Then try installing the x64 version again, but don't wait to install the Win7Loader, otherwise the black screen will reappear to freez the system as the date has expired.