graphics card not outputting to monitors

[kamikaze33]

so i just bought a new graphics card, the GeForce 8400 GS. The goal was to run 2 monitors on it, and that worked fine.
I then installed a program called actual multiple monitors to extend the taskbar to both monitors, which also worked fine.
However when i turned my computer off last night, i was not able to get a signal from either of the monitors. If i hook one monitor into the standard motherboard slot, it will function (albeit with weird settings; my taskbar is vertically aligned on the left).
I do not think its an issue with the power supply, as my computer isnt THAT old (~2008), and this graphics card isnt high end at all; as well it didnt come with/wasnt supposed to require a power supply, its only 300 watts.
I also believe i have all the correct drivers installed, as i put them on straight from the disk, and seeing as AMM was functioning correctly at one point, im not really sure what could be causing it.
Input much appreciated!

[patio]

I would try removing all power to the PC and remove and re-seat the vid card...
These were the factory drivers that shipped with the card...correct ? ?

[kamikaze33]

ok ill give that a try. yup they are factory + their own update (the installation disc prompted for it)

EDIT: that did it i guess. i vacuumed out the whole tower to be safe. It appears to be working now.. ill post up again if i get the same issue when i shut down tonight. thanks

[patio]

For future reference i wouldn't use a vacuum inside a PC case...
They generate huge amounts of static electricity...enough to take out pricey components in the process.

[quaxo]

Glad you got it fixed.

As Patio said, don't use a vacuum as they do generate a lot of static. Instead, get a can of compressed air and blow it out. You can find cans of it most places that have a good selection of computer accessories or order it online. It's relatively cheap and much safer than using a vacuum.