Display adapter trouble

[swords08]

Hello,
well, new to the site and I could really use some help. I got a new hard drive to add more space about a month ago I think this is where it started. Sometimes when I turn on my computer there is no display adapter, like my computer wont read it. I go to add hardware and its not there either. I restart my computer about 7-10 times and all of a sudden its back, once the computer gets shut down and back on its gone again. anyone know whats going on here?
thanks in advance for any replies.

-swords

 

[tuant]

Have you tried removing your newly installed hard drive to see if your display adapter works? Check your PSU, is there enough wattage?

 

[swords08]

yes i have tried that, it does not work

 

[tuant]

Just to make things clear, your monitor works correct but sometimes your computer will not recognize the video card? The next step I would consider doing is installing the latest drivers for your video card and also the latest chipset drivers.