mustang663 :
Trying to troubleshoot problems with a hard drive, so I stuck it in another comp as sec. drive. Computer wont start. Checked bios settings and sec drive is recognized in bios and bios settings look good. Says Starting windows and wont do anything else. Any help would be greatly appreciated!
You can't just transplant a systems drive from one pc to another and expect it to boot, life is not that simple.
While it's fine to install it in another pc to recover files, or check that it does work as it should, you you can't diagnose system problems on another pc.
It could be hardware or drivers that are creating the problem, which can't be verified by putting the drive in another pc.
Put it back as it was orginaly, report the problems and supply any error messages