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Try booting in safe mode first.
Start your PC and as soon as it starts, keep pressing the F8 key continuously. If a screen comes up with an option to start in safe mode, go to that option. If you can boot to that option, go to start-type in system and look for system restore. Click on that and follow the instructions.
If you can't do that then look here:
You could try to start the computer in safe mode, to see if this is driver issue. When starting computer, press down F8 and select safe mode startup. If monitor works in safemode, try to reinstall display driver.
Also you could check with external monitor, to isolate where the issue is related to. If external monitor works fine, it might be HW problem with your laptop monitor.
Hi there, if i read you correctly you are trying to connect external monitor on laptop. As you use old Monitor for this you can probably establish only VGA connection . For this you dont need any special drivers if you use VGA external connector on laptop. You just need to find out right combination on keyboard to activate external monitor to be activated or right click on desktop then properties and display option multiple displays. Of course when you manage to activate mode for external screen please use lower resolution like 1027*768 for second display aka monitor to test .Cheers
If it's new return it. OR, Connect to a External Monitor, if the issue shows in the External monitor it's most likely the Graphics Adapter. Try booting to Safe Mode, do you see the same problem? Have you done ALL the Windows and Compaq Updates? Is it overheating due to poor air flow from the fan (bottom) and side vents? Has it been damaged?
First after you boot it up normally (not Safe Mode) can you move the mouse far to the left or to the right do you see the mouse. If you do see the mouse pointer you are running dual monitor mode and the laptop screen is set as the primary monitor. You have to run it in Save Mode and set the external monitor as the primary monitor. Hit the Start button then select Help+Support and in the search box enter "dual monitors". Read how to set up the primary monitor.
Second maybe you need to activate the external monitor. When laptops boot normally (not Safe Mode again) with a external monitor connected you have to hit the Fn (function) key (probably blue near Alt key) and some other number key (it probably has a blue monitor symbol on it) I'm not sure which one. This key sequence is a toggle sequence. In other words when you boot a laptop it goes directly to the laptop screen then the first time you do a Fn + number key combination it will turn on the external monitor and turn off the laptop screen the next time you push Fn+number key it will turn on both monitors (external and laptop screen) the third time it will turn on only the laptop screen and so forth.
Did you try to start in safe mode? Turn on the laptop and start tapping the <F8> key. This will bring you to a menu with different options and select ‘Safe mode”. If that doesn’t work, try connecting an external monitor to the laptop. You may have to select the video output to display on the external monitor by holding down the blue <FN> key and pressing the blue CRT/LCD (located on one of the <F> keys, like F8,F9, etc..). If the laptop display works in safe mode, then you probably have a video software driver problem. If the display works on the external monitor in normal mode, then you probably have a problem with either your LCD panel. Hope this helps. By the way, the "9" led with the pad lock means your "Num Lock" is enabled. Your responses are intended to improve the level of service provided. Please rate your experience. Thank You.
First remove any new, or unnecessary hardware, extra mouse / keyboard / monitors / dongles / and even the battery.
Try again, and if possible, get into 'safe mode' by pressing F8.
If it is stable in safe mode, you at least can try removing devices under, START / CONTROL PANEL / SYSTEM / HARDWARE / DEVICE MANAGER. Then whilst disabling various devices, try booting again into normal mode, and obtain a new, AND correct driver for whatever piece of hardware was deemed to be at fault.