F5 of control does not activate external screen on a laptop

The problem concerns a laptop Toshiba L350 under Windows Vista Home Premium. The laptop which is about 2 years is used to excite a projector for presentations at a local club. This worked fine for two years, but has now stopped working. The projector has been verified on another laptop and two desktop - and he (the projector) works on all three.

The laptop is connected in turn to a flat screen LCD (Dell) as well as on a CRT screen. Using Ctrl + F5 the 4 options (LCD, LCD, CRT, LCD + CRT, Crt extended) were not tried in turn – no output for each monitor. When the Dell flat screen monitor was connected to the computer Toshiba laptop responded positive. A message appeared on it indicating that a new exhibition had been detected and which offers three options for the display mode. "Duplicate laptops screen" has been selected and click apply/OK. Stiil no signal from the laptop.

Opening of the external display 'box' Mobility Center has been inspected and showed that the external display is connected.

Various other actions such as verification of the resolution of the screen and other parameters have also been tried, but to no avail at all.

It was suggested that the problem is associated with ' driver'. Can anyone help?  Thank you

Hello

You can refer to the following steps:

a. go to the desktop.

b. right-click on the desktop.

c. Select graphics properties.

d. Select Hotkey option in the menu and try to set it up and check.

Tags: Windows

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