Failed installation resulting in rollback.

Okay soo... I've tried using a guide on how to install win7 from HDD, by changing the bootsectors or whatever... (by setting the bootmgr from the DVD as the default windows one), that actually worked, but, again as before after the Completing Installation the screen went black, and then it just restarted, and kept doing the same.. I tried loading the vista drivers during the installation afterwards, nothing, gave me an error, and the installer wasn't able to load them. And the funny thing is that the rollback didn't occur after both tries, so I had to nuke the whole partition. So anyways, I'm done with windows 7, to hell with it. Thanks to everyone who tried to help me so far, XP is still the best afterall :/
Cheers.

There is always a solution - it just takes persistence and learning a lot more about your computer. No need to go back to XPired unless you lack the patience.

You might want to zero the entire HD to make sure nothing is on there that's interfering with install. You can use the maker's diag/repair disk to do this after testing your HD with full CD scan: Hard Drive Diagnostics Tools and Utilities (Storage) - TACKtech Corp.

Also remove all but 2gb of RAM, swap sticks, test your RAM.

Did you run the Win7 Upgrade advisor to see if your hardware is compatible? Windows 7 Upgrade Advisor

What I do when I don't have any more time to troubleshoot is remove the HD to install Win7 in another machine, then return it to the problem machine where it often will start up, swap out all drivers and run fine.