weird green line

I have a station on my workplace network, which crashes frequently.  When it crashes, it displays a green line about a third of the way down the screen, across the whole screen.  The line actually consists of small vertical lines like this:-

lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll

The computer has onboard video and sound.

My question is, does this green line point to a particular hardware component fault and has anyone seen it before and know for sure what causes this sort of green line.
warlock99Asked:
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slink9Commented:
My first suggestion would be to replace the onboard video with a regular PCI video card and see if that helps.  That way you will fix it if this is a hardware or driver issue.
You may also want to look at the memory of the computer.  Onboard video shares the RAM of the computer.  If the memory is bad it could cause video lockups.
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ShamsudeenCommented:
Yes, It almost definitely is the memory. ie. either the onboard one or the memory on the graphics card.
Had the same problem once an my machine used to freeze. I changed the onboard mem and things are running smoothly.

Rgds
Shams
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sathishkumar_sriCommented:
I suggest that you update the antivirus definition files in your system and run a complete virus scan. I have read about a virus causing a green line like the one you have described. Sorry, can't remember which one. If you do not have a antivirus installed, try the trend micro's online virus scanner from the following URL:

http://housecall.trendmicro.com/]

Also you can try scanning the system with AVG Antivirus. You can download AVG antivirus from http://www.grisoft.com

Hope this helps to resolve the problem.
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warlock99Author Commented:
Thanks guys, I'll test all these solutions out and tell you which answer is correct.
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HVYMTLCommented:

 A quick suggestion,

I had this problem once and it was not a virus problem- it was video card related.


 you mentioned "crash"- did the line appear during, or after the crash and before or after you reboot?

anyway- this can't hurt and only takes a second or two-

 right click desktop and go to properties\settings.

reset- screen resolution up or down the scale and apply- this will sometimes reset a video related problem.

also- turn off active desktop if enabled and eliminate any non-windows backgrounds.

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