Lines everywhere system freezes. Why is this happening ?

are you gaming on the integrated?

yes, in the intel hd 3000, right now i'm running a prime95 torture test just to verify is not the cpu, before I did a memtest and also went well, i'll do another mem test later


Can be the integrated gpu ?

Okay, before you buy a new video card, check that your HDMI cable is properly connected if you're using the HDMI output, check also the cable connection if you are using DVI output, same thing with VGA cable if you're using VGA output. Check from the PC(I/O shield at the back of the PC) to the Video input of the monitor. If the video is still the same? I suggest you buy or borrow a PCIe 2.0 X16 Video card.

^ This.
Or, you would just buy a cheap card, HD 5XXX series, or GT 240 from Nvidia.
Your call.

The video card was already ordered it was just out of stock when I did, the vga cable is properly connected, if the screen freezes, keyboard doesn't responds i doubt is the vga cable.

Right now I'm doing test with just 2 rams and no problems so far, just getting high temps from the CPU i'm thinking to buy a new fan cooler like the hyper 212, after i'll check with the other two, if something happens then one of the rams is damaged, else are the temps of the rams if this is not then I got no idea....

I'm thiking the stock cpu fan is spreading the heat to the ram since they are close... and that could be a cause, wish i had a way to check ram temps without any special tool..