Monitor dies

I am trying to fix a friends computer.  When the Unit is turned on the Monitor light goes from green to yellow and the display doesn't even get to the POST.  Any suggestions?
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Change the video card.
as Crazyone said
it could also be the PSU (power supply)
does it sound like the system is booting up?
if you can hear the HDD spinning up as per normal & all the fans are spinning .
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LucFEMEA Server EngineerCommented:
Can you check the monitor on another computer, if it works there then your videocard is bad, if it doesn't work, your monitor is bad. As far as I know this is the easiest way to test these problems.


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make sure the power cable and the other cable connected to the monitor are tightly in place.
dobbynpAuthor Commented:
Thanks to everyone for your help
LucFEMEA Server EngineerCommented:
Glad to help
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