My laptop's specs:

• Lenovo IdeaPad Z570
• Intel Core i5-2410M @ 2.3Ghz
• 6 Gb RAM DDR3
• 640 Gb ATAPI Hard-disk Drive @ 5,200 RPM
• NVIDIA GeForce G520M with Optimus switching technology
• Broadcom 802.11n Network Adapter
• REALTEK soundcard
• Windows 7 Home Premium 64-bit

I downloaded Ubuntu Studio 11.04 and burned the iso image onto two different DVDs, using two different programs (one DVD is RW, the other is just R). I verified the hash MD5sum thing. I get as far as GRUB with the 4 options (install, advanced install, disk verification, system rescue) but no matter which one I select, I get a blank screen and nothing happens. The DVD drive spins down after about 30 seconds. Also just before the GRUB screen I get a message saying Error: "Prefix" is not set. I'm not sure if that's relevant.

I have tried all the options using both DVDs. Same thing happens. I have changed the graphics setting in BIOS to UMA or Optimus, but still happens either way. I've tried booting with the wireless switch turned off, same thing happens.

I downloaded 'vanilla' Ubuntu 64-bit and burned onto a CD, and the same thing happens.

I have downloaded Ubuntu 32-bit and I am able to boot from the live CD (interestingly the wireless card won't work, but that's maybe another issue).

I have searched extensively through these forums and other sites but I can't see anything that will help me.

Is there something I'm missing? I'd really appreciate help on this. The laptop is less than 2 weeks old. I was so looking forward to getting Ubuntu Studio up and running. I've gone about as far as my technical abilities will allow.