Hi, I have a laptop (HP Probook 4430s), with Windows 7 as the OS. The problem I face now is lagging in some programs when I use them. For example : a) When I use the putty(already sshed into the server), and then type commands the words get stuck/hang for a while before it continues to show the rest of what I type. Means its not smooth typing. It pauses while I am typing, then continues. b) When I open Internet explorer, it does not open smoothly. It opens up halfway then hangs before showing the full screen. c) IE takes a long time to load. d) While scrolling down a pdf document, it also gets stuck halfway(pauses), then reaches the bottom of the page later from where we had scrolled earlier. I had done a few things that could resolve this, but the issue still persists. Some of the things that I have done : 1) Run a disk cleanup 2) Run a disk defragmentation 3) Clean up the browsing history and allow it to last only 1 day 4) Updated the a/virus software However these things still do not resolve the problem. Furthermore, in task manager, the Performance Monitor shows high spikes for Disk and CPU usage. How do I reduce the spikes? What else could be the problem, and how do are resolve them?