Little black bars popping up all over the place. PLEASE HELP!

[ajthongbam]

I saw them pop up while I was browsing through a bunch of different fonts on Powerpoint. Now, It's starting to appear all over the system. I can't identify what the problem is and how to solve it. Please help me.

 

[Colif]

Try this: http://www.tomshardware.com/faq/id-2767677/clean-graphics-driver-install-windows.html

also, try this:
right click start button
choose command prompt (admin)
type SFC /scannow and press enter

this scans system files and might fix this behaviour

 

[Shaun o]

It can be a sign that if you have a 3D graphics card in your system, and you have overclocked the Gpu of the card or the memory of it to make each run at a faster speed.

That you have overclocked it too much, and should lower the clock speeds you set.
If the system is either a tower based system, or a laptop.

It can indicate that the graphics card used in the system is getting too hot, or overheating slightly also.
This can be due to a fact that if a tower based Pc the card needs to be cleaned free of any major dust build up that will effect the cooling of the gpu of the graphics card.

Or in the case of a laptop that the vents where hot air is expelled have become clogged with dust also, clocking cold air from the fan on the cooler passing through the cooling fins of the cooling solution used for the graphics card or the one used to cool the cpu of the laptop.