Windows 10: PC will not boot on restart, works most of the time from power off

Lenovo IdeaCenter K450, 4-5 years old. Specs in My Computers.

This problem started recently, after one of the updates though I'm not sure which one. I currently have:





after uninstalling KB4345421 and KB4338832 as I was trying to see if one of those had caused my booting problem.

When I do a restart, the system shuts down correctly then starts to reboot. I get the Lenovo logo and nothing else. It will sit there as long as I let it. If I power it off, wait a few seconds then power on it will boot up correctly most of the time. Maybe 1 in 4 or 5 will hit the same hang condition.

Could this be a problem with my Samsung SSD 840 EVO 250GB drive? Here is the Disk Management window:

Attachment 196638

I reset UEFI by jumpering BIOS reset then powering on, then powering off, moving jumper back then powering on again. Didn't make any real difference. Default enabled CSM which I disabled. I'll take pictures of the BIOS screens and add to this post in a few minutes.

Any other information I can provide?

Since the problem seems to occurs prior to actually booting Windows I don't think a clean install of Windows 10 (1709 or 1803) would make any difference but I'm willing to give it a shot as I have good Macrium backups.

I'll post this now then go get the BIOS pics and add them in a bit.

Here are the BIOS windows:









:)

 

Lost Power, now PC won't boot. Powers on and clicks.


I had tried both of those steps. Neither worked. I have a replacement power supply on order. Should be here on Monday. Thanks for the suggestions.

 

MY PC has just statred to restart even during Boot and after boot, Please help.

if you want to change any setting just do it step by step so you know what might happen when your pc restart again and again

 

Lost Power, now PC won't boot. Powers on and clicks.

Hope for sure it is the Power Supply without testing it and the checking the Graphics Card.