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If your Compaq CV735 Monitor is blank after you unplugged and disconnected cables when moving furniture, then it is most likely that you have not reconnected / replugged the cables correctly or not firmly enough. . . .There should only be two such cables, one of which will be a power cable which should be easy to identify by the electric plug on one end - ensure that this is plugged in to a live power outlet and that you have a power light on the monitor when you switch it on. . . .The second cable provides the video signal from your computer to the monitor and should probably have matching plugs on both ends of the cable - again ensure that you have connected these plugs firmly at both ends. . . Check that at the computer end of the cable that you do not have more than one video output socket that the cable can be connected to - if you do, then try connecting the cable to the alternative socket.
Unfortunately..your display may be shot...Is it a Compaq Presario? These laptops have a history of display problems...I have a Compaq Presario R3000 and the display is showing a reddish color in the left bottom corner of the screen and my brother had a similar problem with a Compaq laptop where the monitor stopped working....Unfortunately it would cost more to replace the monitor than to buy an Apple MacBook...
You can buy a cable and attach the laptop to a desktop monitor and it will work although you will lose the mobility of the laptop which is what makes a laptop so appealing.
If your laptop has a NVidia graphics card you can go to display in control panel and set it up to use Plug & Play Monitor but you may need to use safe mode or you wont be able to see anything because your screen doesn't work....You might get lucky and when you plug in the cable (just like you would to attach a PC tower to a monitor), it will work and you will be able to make the monitor the dominant screen.
Check that the signal cable from the computer is firmly connected and that there are no bent pins in either end. If the trouble continues, the problem is in the monitor itself. Given the low replacement cost, it's uneconomical to try repairing these.