https://community.hpe.com/t5/communications-and-wireless/overhead-projector-help/m-p/3665729#M4484 Thanks very much. But today I've tried again, there is an error message: "A USB device is exceeded the power..." (I don't remember exactly, and I don't understand). That message appears immediately when I connect physical my notebook with my projector. Why it is USB ? In fact, that projector works well with other notebook, and my notebook works well with other projector. May be not compatible ? Tue, 08 Nov 2005 09:00:26 GMT Huy Viet 2005-11-08T09:00:26Z https://community.hpe.com/t5/communications-and-wireless/overhead-projector-help/m-p/3665726#M4481 I'm using Compaq Evo N600c. I've connected it to my overhead projector already, but the screen is blank. When connect with another projector or a monitor of desktop computer, it works. Please tell me what's happening ? Mon, 07 Nov 2005 08:32:09 GMT https://community.hpe.com/t5/communications-and-wireless/overhead-projector-help/m-p/3665726#M4481 Huy Viet 2005-11-07T08:32:09Z https://community.hpe.com/t5/communications-and-wireless/overhead-projector-help/m-p/3665727#M4482 <BR />Hi, vietsocolas:<BR /><BR />It sounds like you need the video drivers for the specific projector you are using. Did the projector come with a CD? If so, the drivers are on that CD.<BR /><BR />If not, go to the projector manufacturer's web site. You can download the drivers from that site. Make sure you download the drivers for YOUR operating system (Windows 98, Windows 2000, Windows XP, etc.)<BR /><BR />Let me know if this worked for you.<BR /> Mon, 07 Nov 2005 20:39:55 GMT https://community.hpe.com/t5/communications-and-wireless/overhead-projector-help/m-p/3665727#M4482 budhawk 2005-11-07T20:39:55Z https://community.hpe.com/t5/communications-and-wireless/overhead-projector-help/m-p/3665728#M4483 Most projectors don't need drivers, they just take whatever the VGA port gives them and throw it out on the screen.<BR /><BR />Could you please clarify what is blank - is it that the N600c won't drive the projector or that you can't use the N600 screen and the projector simultaneously? Tue, 08 Nov 2005 07:40:17 GMT https://community.hpe.com/t5/communications-and-wireless/overhead-projector-help/m-p/3665728#M4483 Ernest Ford 2005-11-08T07:40:17Z https://community.hpe.com/t5/communications-and-wireless/overhead-projector-help/m-p/3665729#M4484 Thanks very much. But today I've tried again, there is an error message: "A USB device is exceeded the power..." (I don't remember exactly, and I don't understand). That message appears immediately when I connect physical my notebook with my projector. Why it is USB ? In fact, that projector works well with other notebook, and my notebook works well with other projector. May be not compatible ? Tue, 08 Nov 2005 09:00:26 GMT https://community.hpe.com/t5/communications-and-wireless/overhead-projector-help/m-p/3665729#M4484 Huy Viet 2005-11-08T09:00:26Z https://community.hpe.com/t5/communications-and-wireless/overhead-projector-help/m-p/3665730#M4485 the projector should not have anything to do with usb... odd. <BR /><BR />other things to try, boot with the projector connected to the laptop, sometimes the bios looks for conductivity on the VGA circuits before enabling the port. <BR /><BR />most laptops have a key combination that enables the external VGA, on Dells it is Fn+F8, IBMs it's Fn+F7, i'm not certain about Compaq, but look for a key with a blue monitor or something about CRT in blue. Tue, 08 Nov 2005 12:39:48 GMT https://community.hpe.com/t5/communications-and-wireless/overhead-projector-help/m-p/3665730#M4485 Thomas Bianco 2005-11-08T12:39:48Z https://community.hpe.com/t5/communications-and-wireless/overhead-projector-help/m-p/3665731#M4486 When I pluged that projector into my notebook, all of USB connector and a touchpad were "hang up". I don't know why. Sat, 19 Nov 2005 08:14:07 GMT https://community.hpe.com/t5/communications-and-wireless/overhead-projector-help/m-p/3665731#M4486 Huy Viet 2005-11-19T08:14:07Z