Black screen on disk bootup haha the gun is in my mouth right now
 

I've been able to install 32-bit Windows 7, which is nice, but what I need is to install 64-bit Windows 7. Only problem is, when I try booting from the dvd for both versions, I get nothing but a blank screen. The 'press any key to boot from CD or DVD...' prompt comes up, I slap the keyboard, and then black screen. No flashing prompt, no mouse pointer, nothing but blackness forever and ever.

As a bonus comedy option I'm thinking about installing Vista 64 and then upgrading to Windows 7 64, but if I can't boot the goddamn dvds then it'll create problems in the future.

A lot of computers nowadays have an option during the BIOS to push a certain button to view a boot menu. Try getting to the CD that way instead of through the usual one.

Alternatively, try checking all the connections inside of your computer. Maybe the data cable jiggled a little loose and the drive can detect there's a disk in there, but can't access it.

Also, during back screen, does the drive speed up or slow down?

Connections are all fine, if they weren't then I wouldn't be able to boot from my Windows xp cd.

Additional Spam:
The drive speeds up. I booted from the boot menu and let it run for a little while, then received an error report:

Which I suppose means I need to try burning the iso again, or downloading a new one.

Although I doubt this can be backed up by any evidence, it's worth a shot. I've read that some people installing Windows 7 ran into booting and installation-completion problems and claim that this was remedied by burning the Windows 7 image to a CD at the slowest speed possible (usually 2x). If you're going to reburn the CD anyway it's worth trying.

Although I don't really have experience with Windows 7 and/or 64-bit systems (I'm assuming you DO have an x64 compatible processor) I have run into several instances of blank screens on boot ups.

That being said, I think it could possibly be your monitor and/or graphics drivers that are the problem. If you have a VGA connection on your computer (on-board VGA) you might want to try using that one instead of the one on your graphics card. Also maybe try using another monitor. I know my brother has this crappy LCD monitor (that was shipped with his crappy gateway) that tends to give a blank screen on boot up every now and again.

Of course, as already mentioned, perhaps it is just that the 64-bit image is corrupt on your dvd in which case burning at a lower speed or downloading (or purchasing) Windows 7 again are probably your only options.