I have a Dell XPS M1530. This afternoon I have encountered a problem with my laptop. first I realized that when I try to log in windows and type my password, the cursor focus loses or does not type. Later I realized that the keyboard and mouse does not function properly at the time I start my laptop, or this problem emerges after I use it for a while ( 4 5 minutes ). I even used external keyboard and external mouse, and the behavior is the same. I have Windows 7 and Mint in parallel, and the behavior is almost same in both Operating Systems. I updated the BIOS twice and did not work.
Sounds like it might be the NVIDIA GPU issue that the XPS M1530 can suffer from. As the GPU (Graphical Processing Unit) overheats, it slows itself down, and this can appear to make the laptop start to respond very slowly, e.g. a slow to respond mouse or a slow to respond keyboard, no matter if its the laptops own keyboard or mouse or external ones. The laptop itself may not appear hot to touch, since the issue is the cooling of the GPU itself. There are some things to try: