|"i sent i screen shot to a friend of mine and he sait it looked normal, so could it be a problem with my screen?"|
Sounds like it. All laptops have a flimsy LVDS cable that attaches the LCD panel to the motherboard. It's not uncommon for the cable to work loose.
If your display driver is installed and you are running in 32-bit color, have that cable checked.
Socket 939 | Dual-core Opteron 185 @ 3.2GHz | 4GB | 1.0TB | Win7 x64
GeForce GTX 460 1GB | X-Fi Ti Pro | A8N32-SLI Deluxe | Antec P182