Integrated video card

Yes, if the integrated video adapter is indeed the problem, you can install a stand alone video card and fix the problem.

Have you verified that the monitor is not the issue (connect to another system)? How about checking the video cable?

Yes you can do that. But the type of the card depends on your motherboard's compatibility, power supply capabilities, your budget and what type of user you are (i.e. if you play games etc).  

As far as I can see you computer has 1 PCI-E x16 slot which can be used to plug in a new graphics card. I wasn't able to find anything about its power supply though. The best thing to do is go for a better power supply as well.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

This should be enough. It is very high quality and it is cheap as well.

the monitor works on my sons lap top not sure of the cable..computer is makinga louder noise than usual. We just use it for home use, Can I buy a inexpense (no big deal) VC to get things up and running again.

Get something like this. It will out-perform your integrated video by leaps and bounds and costs very little.

Good luck!

http://www.newegg.com/Product/Product.aspx?Item=N82E168...