Originally Posted by jomama22
I would first unplug any external USB storage device and see if anything changes. You can also clear the CMOS and reset up the drives and anything else you changed from default bios. I would do a few clean reboots as well. If its just booting/shutdown problems I wouldn't be to worried about damaged components.
Originally Posted by BlindShot
A bad psu can cause big problems. Could the os be corrupted from hardware faults when the psu was on the way out? I did have a problem with a usb drive causing very slow reboots. I would clear cmos and install windows on a spare drive to see if the problem continues.
Ended up taking the rig home preparing to install windows on a diff ssd as per your suggestion. Ran single monitor, keyboard, mouse, and LAN only...noticed that the problem disappeared. So I took the PC back to my clients place plugged in all his USB devices, low and behold the problem comes back. After more reboots than I care to mention, the hanging issue turned out to be an HP photo smart inkjet printer...***!?! Fortunatly the printer was wifi compliant so we removed the direct connect, set it up as a networked printer and the problem disappeared...
Thanks to your suggestions I rooted this problem out without too much hair pulling..now I can enjoy a beautiful sunday afternoon.