Hi, thanks for the answer.
Nop, i have been using usb mouse and keyboard since 2012.
motherboard: Asrock K7VM2
I don't have any xp instalation disc / usb, etc.
The thing is that this computer was fine yesterday, idk what happened.
i tried unpluggin all usb things, and still have the same problem.
Will try with memory ram.
@edit: unplugged 1 memory ram, and computer did 3 beeps when i turned it on. Followed beeps guide, unplugged second one and plugged the first one on the same place, same error.
Unplugged both and swapped their place, and now computer works fine. Idk what happened, help me i think my computer is going to explode.
@edit2: is there a way to know if both memories are working? discard memtest86 i don't have pendrives T_T
Edited by Ryusei, 18 September 2016 - 11:54 PM.