Maybe you see the login screen but after entering your password, nothing happens.
If it fully starts, justrestart your computerfrom there as you normally would and see if Windows starts correctly.
Start Windows with the Last Known Good Configurationif you have Windows 7 or Vista.
(Later versions don’t have this feature.)
Repair your Windows installation.
Repairing Windows replaces the important files that are damaged without removing or changing anything else on your setup.
Start Windows in Safe Mode and thenuse System Restore to undo recent changes.
Scan your gear for viruses, again from Safe Mode.
Clearing the BIOS memory on your motherboard will return the BIOS parameters to their factory default levels.
A BIOS misconfiguration could be the reason that Windows can’t get all the way to the desktop.
Reseateverything in your gear that you’re able to.
Check for electrical shortsinside your rig.
Test the RAM.Free memory test programsmake this easy.
Replace the memoryin your gear if the memory test shows any kind of problem.
double-check you’ve tried your best to complete the troubleshooting steps up to this one.
Steps 11 and 12 both involve more difficult and destructive solutions to Windows not starting fully.
Test the hard drive.Free hard drive testing programsmake this easy.
Replace your hard drive if your tests show an issue.
After replacing the hard drive, you’ll need to perform a new installation of Windows.
Perform a clean install of Windows.
In Step 3, I advised that you give a shot to solve this issue by repairing Windows.
Another cause could be an electrical short, especially reboot loops and hard freezes.
Most of the time, however, just a part of your box’s memory will fail.
FAQ
First,switch on the administrator accountvia the command prompt.
Entercmdin the Windows search box; underCommand Prompt, selectRun as Administrator.
Typenet user administrator /active:yes, and then pressEnter.
Now, you’ll have the option to sign on using the administrator account.
Toremove your Windows passwordin Windows 10, open theControl Paneland selectUser Accounts.
ChooseMake changes to my account in PC options>Sign-in Options.
UnderPassword, selectChange, jot down your current password, and selectNext.
Either change the password or leave this page empty if you don’t want a Windows login password.
Or, selectResetPasswordand answer the security questions to reset your password.
A clean reinstall of Windows 10 is a last-resort course of action.
