PC takes ages to boot and how to look at it
Just recently i had multiple VMs that took about 20 minutes to boot. There is a very neat tool to analyse the Windows Boot process called xbootmgr
Using "xbootmgr -trace boot" I was able to see that "autochk" was taking most time of the boot process.
Googling around lead to the point that autochk thinks that the disk is dirty, may do a checkdisk but doesn´r remove the dirty flag.
Setting the state is done by calling "fsutil dirty set C:" and if you have multiple partitions you may change the drive letter here.
Hope it helps!