Upgraded to Windows 10 without installing updated drivers
So I went ahead and upgraded the Windows I am using through Bootcamp from 7 to 10. My mistake that I did not update any drivers from Apple first. Now that the upgrade is complete I get a BAD_POOL_HEADER message about five seconds after I log into Windows. So I can't fix or do anything from the Windows side.
Another problem is that my computer is a Mid-2011 21.5-inch iMac which is not listed on the compatible machines for the Windows 10 drivers. So I really just want to revert back to Windows 7. What is my next step here? Thanks!
iMac, OS X Yosemite (10.10.3)