Windows 10: My Computer will not startup properlyeven when restarting!

My computer was working just fine earlier today, no BSOD, no slowness nothing! Then I left it to do something then it went to sleep mode. When I turned it on again later it showed :



Then when it goes away, it then either says “Diagnosing Yor PC”:



Or it just shows a black screen! Followed by a screen saying it wasnt able to start correctly:


Then when i restart it does it all over again and the troubleshooter can’t figure it out either! What do I Do?!

:)

 

Can't get GPU-Z to start with Windows 8.1 startup

I'm not sure how to do that. Could you list the steps for a noob?

 

Computer mysteriously restarts....

Here you go

1.


Right-click My Computer, and then click Properties.

2.


Click the Advanced tab.

3.


Under Startup and Recovery, click Settings to open the Startup and Recovery dialog box.

4.


Clear the Automatically restart check box, and click OK the necessary number of times.

5.


Restart your computer for the settings to take effect.

 

Slow Startup

see if my words helps...skip the steps that u already tried.
1. check the start-up items. Run the command of "msconfig" , check the "start up" page(i am not sure of the precise name of this page,coz.i am using chinese version of windows). diable ALL the items listed. save the setting and restart.
2. check the free space of each partition of harddisk. make sure that each partition has a free space of more than 1 gb( higher ,better).
3. check the list of installed programs, through the control panel. uninstall those seldom used
4. it might be unkown comflict of softwares. keep your system as clean as possible. for example, you can disable your antivirus, then restart to see if it is faster
5. it might be fragments. defrag all partitions.
6. manage the services of your system. right click "my computer",click "manage(G)", in the window below, the third level-1 menu is "service and applications". disable unecessary auto startup services.
7. up to repend~~