Every laptop has a facility to toggle the display from the screen to an external display. The exact method varies from brand to brand. But they're all a variation on the same theme. It's the Function button (Fn) and one of the F keys. On my HP its Fn + F4. I've had laptops in the past where it has been F5 and others that were F8. All of them though had a little symbol representing a screen on the correct key.
The way it works is that the laptop screen is on. The first press of the two buttons will put both screens on. The next press is just the output to the projector. The final press brings it round to the laptop only again.
Once you have just the projector running, then you should change the display resolution to suit the projector if the laptop hasn't already done it for you. You can tell when it's wrong because the text won't be crisp. Right click on the PC desktop and then select "graphics properties" or similar from the menu. Change the resolution from the drop down box. Click OK to confirm. The correct resolution for a projector is the native rate. This is the number of pixels on the display, not the maximum resolution.
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Every laptop has a facility to toggle the display from the screen to an external display. The exact method varies from brand to brand. But they're all a variation on the same theme. It's the Function button (Fn) and one of the F keys. On my HP its Fn + F4. I've had laptops in the past where it has been F5 and others that were F8. All of them though had a little symbol representing a screen on the correct key.
The way it works is that the laptop screen is on. The first press of the two buttons will put both screens on. The next press is just the output to the projector. The final press brings it round to the laptop only again.
Once you have just the projector running, then you should change the display resolution to suit the projector if the laptop hasn't already done it for you. You can tell when it's wrong because the text won't be crisp. Right click on the PC desktop and then select "graphics properties" or similar from the menu. Change the resolution from the drop down box. Click OK to confirm. The correct resolution for a projector is the native rate. This is the number of pixels on the display, not the maximum resolution.