We help IT Professionals succeed at work.
Get Started

Laptop screen blanks out TV screen at login

Last Modified: 2012-05-12
Hello all,

I have a friend whose laptop runs health info messages on a TV screen in the lobby of her office.  They create the info in the laptop.  The laptop does not run the info on the TV screen, though, and is taken back to the setup room it normally occupies. The TV runs the info.

Now, the TV will see the bootup of XP through to the login screen, at which point it goes blank while still showing it is in PC mode in the upper right corner of the screen.  In the meantime, at the login screen, the laptop screen takes over the duties of video.

This is pretty much beyond me. I volunteered to check on it thinking the FN key was toggled, but it is not.  Since the TV goes blank at the login, I figured XP was stopping input to the TV screen at this point, so I disable the Firewall and removed the login password to check, but neither of those were causes.  This combination worked last week when they changed the messages on the TV screen successfully.  Any Ideas as to where to check next?  Would drivers just have quit working like that?  I ran Ccleaner, Ncleaner, Malwarebytes, and found the Dell Vostro to be pretty clean.  There were a number of Registry problems, all minor.  Didn't run Combofix or Sypbot.  

Watch Question
This problem has been solved!
Unlock 1 Answer and 13 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE