When you ghosted back, you would have overwritten the Windows 7 reinstall and put your system back to how it was before... You should have been able to ghost without any operating system in the first place.
If your system worked fine before the ghost, I think the problem could be an incompatible driver or software based issue. You can't rule out bad hardware, but, it can be hard to diagnose and I would need more information - for starters, download and run this - Blue Screen View.
If it crashed straight after the reinstall, it could identify some sort of hardware failure.
To help further, we really need more information.