Screen disconnects from PC during start up. Need to restart it at least 3 times to get anywhere.

Question

When I start up my pc after a period of inactivity, I get to the login screen and it starts lagging uncontrollably. This continues until I log in, when the lagging problem aggravates until the whole screen just disconnects. After I try to restart it, the screen stays black while the pc runs and does not respond to any command. After I restart at that point, I am lucky if have to repeat the process just once more before I get into the main account. All this is frustrating enough without taking into account the random periods of lag I have to deal. with. The computer itself is brand new, and I have barely used an eigth of my total RAM.

Answer 1

1

The best first option is to go to the support page for your PC on the manufacturers website to downlaod an reinstall (not update) the version of Chipset drivers and Graphics drivers they provide.

2

If that does not resolve the problems:

Click your Start Button, type winver and hit Enter

Please provide a screenshot of the resulting dialog box.

Answer 2

This pattern matches a Windows black-screen or display-driver issue during sign-in and startup. Try these steps in order:

1. Check the display path first.
   • If using an external monitor, make sure it is powered on and the cable is firmly connected.
   • Press Windows + P, then press P again and Enter to cycle display modes.
   • Expected result: if Windows is sending video to the wrong display output, the screen should return.
2. Reset the graphics driver when the screen lags or goes black.
   • Press Windows + Ctrl + Shift + B.
   • Expected result: a beep or screen flicker indicates the graphics driver reset worked.
3. If the screen is black but the PC is still running, try the security screen.
   • Press Ctrl + Alt + Del.
   • If the security screen appears, open Task Manager.
   • If possible, restart Windows Explorer from Task Manager.
4. If the system becomes unresponsive, force a restart.
   • Press and hold the power button for about 20 seconds.
   • This is a recovery step only; repeated forced shutdowns can risk data loss if Windows is writing updates or files.
5. If the black screen happens after signing in, check whether the shell is loading correctly.
   • Warning: Registry changes are risky. Back up the registry first.
   • Press Windows + R, type regedit, and go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
   • Verify the Shell value is set to explorer.exe.
   • Also check that the key permissions match a working device.
6. Check whether Explorer or Userinit is failing after sign-in.
   • Press Windows + R, type eventvwr.msc, and open Event Viewer.
   • Go to Windows Logs > Application.
   • Look for Event ID 1000 around the time of the issue, especially for explorer.exe or userinit.exe.
7. If the issue continues, use a clean boot.
   • A clean boot helps identify whether a startup app or service is causing the black screen after sign-in.
8. If Task Manager opens during the black screen, check whether these processes are running:
   • explorer.exe
   • userinit.exe
   • If they are running, process dumps can be collected with ProcDump for deeper diagnosis.

Because the PC is new and the symptoms include startup lag, black screen, and display loss, the most relevant first actions are Windows + Ctrl + Shift + B, Windows + P, and Ctrl + Alt + Del. If those do not stabilize startup, the next most relevant path is checking Winlogon\Shell, reviewing Event ID 1000, and then doing a clean boot.

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References:

• Troubleshooting blank screens in Windows
• Troubleshooting black or blank screens in Windows
• Scenario guide: Black screen after you sign in to the system