bootcamp drivers windows 10 macbook 2010

After restart, I found that that Windows partition is unbootable. The installer proceeded to copy all the files, but then, at the end, it complained that it couldn't update the boot configuration. I tried to install Windows 8.1, as suggested. How can I make the Bootcamp Assistant recognize my bootable USB stick? Since this is no longer an option, my only hope is USB. What bugs me is the fact that this very laptop used to run Windows on Bootcamp successfully in the past, but it was installed via Bootcamp Assistant from a DVD. Having thought that the graphics driver is the most probable culprit, I tried disabling the built-in Intel HD graphis card, hoping it would help, but to no avail. There's always a problem with one of the mountmgr.sys or igdkmd64.sys drivers. Going either way results in blue screen and/or endless restart/repair cycle that can't be fixed by anything I tried. But things get impossibly complicated the moment I update drivers either via Apple's Bootcamp driver package or Windows Update. I followed these instructions and it got me as far as installing and an initial run of Windows OS.

Unfortunately, Bootcamp Assistant insists on this boot media and completely ignores the bootable Windows 10 USB that I have plugged in. The laptop has a broken optical drive which doesn't recognize any media. As the title says, I'm looking for a way to install Windows 10 on a mid 2010 MacBook that is currently running OS X Yosemite.

Bootcamp drivers windows 10 macbook 2010