Monitor or video card?

[lpopelka]

Have started to see blocks of different color on screen. Similar to spreadsheet grids, a couple of columns wide, running vertically down screen. Can see color in every other "block". What's happening?!

 

[Tmagic650]

Swap out the monitor first. What type is it, LCD or CRT? What are you computer specs/video card?

 

[lpopelka]

LCD. Runnings Windows XP, on NVIDIA GeForce 7300 LE

 

[Tmagic650]

If you can swap the monitor with another, that will tell you for sure what is wrong. It could be the video card still