Windows 10: Computer randomly locks up and I can't interact with anything unless I force reboot my PC

Sometimes I will be on my computer and randomly my whole computer appears to be frozen aside from me being able to move my mouse. I can't click into any applications but I hear them all running in the background if they have sound. I can't open up task manager or ctrl-alt-delete when my PC is in this state. I have to click the reboot button on my PC to force restart. Any help would be appreciated.

:)

 

Computer Randomly locks up

Ok, so my dads pc (its in sp) completely randomly locks up.

Im not sure what the deal is.

it was working fine, i swapped boards and it game me a memory error but no big deal, fixed that. now, it locks up a few times a day, whether it is in the bios, or post screen, windows, trying to format windows ect.

Im not sure what to do! if its the board i'll rma it and give him "back" the P45 but if its ram or hdd idk...

what do you suggest?

 

PC Randomly Reboots

Just recently, my PC started to randomly reboot, to start it was once every other day, and know every few minutes.
Any suggestions to rectify this problem would be greatly appreciated.

 

Random Auto-Locking of Computer Screen

Nobody suggested checking out Event Viewer? When your computer randomly locks, search for, and open: Event Viewer Under Windows Logs, Check out: • Application • Security, and • System See if you can find something that states anything that could be related to your computer locking. The newest events are listed at the top of each section, so finding an event log would be pretty easy to find. Hopefully we can find what is causing the computer to lock.