A few days ago I installed Windows 10 on my Dell Inspiron N5110. Because of constant explorer.exe crashing I decided to go back on the original Windows 7 64bit installation (from within windows 10 recovery console). On my first attempt to run Windows 7 after the downgrade a blue screen pops with with Error STOP: 0X0000007B for almost a second and reboots. In my attempt to restart in safe mode it hangs after classpnp.sys, but probably this not the case because I renamed classpnp.sys to classpnp.old and it hangs now on disk.sys that it’s loaded just before classpnp.sys.
I have already checked the disk with the chkdsk /f /r command from a windows 7 Instalation disk, bootrec commands and bcdedit.
None of these worked so I tried to recover the factory system, from the Windows repair console (F8) and the error 0x400110020000100C pops.