Hey bro. Sounds like your computers RAM is saturated. Which means you may not have enough. It could also mean you have a virus. Take a look at your Task Manager. Open the Task Manager by right clicking an empty area in your task bar and then clicking Task Manager on the resulting menu. At the bottom left, it lists how many Processes are running. Keeping that under 40 is great for a computer running Windows XP with 1 or 2 gigs of RAM. At the bottom center, check your Commit Charge. If your first figure is over 35% of the second figure, you're computer is really struggling. Click the Processes tab near the top of the Task Manager. If there are any processes in the list that are just an unintelligible string of letters and numbers, you probably do have a virus. Programs like lsass, csrss and smss are fine. I'm referring to things like kdrk2ic8ix.exe
If you're running more than 40 processes, the easiest thing to do is check the icons by the system tray where the clock is. If you have an abundance of them, you can prune that down. Each of those icons represents a program that is running in the background. Each program running in the background uses ram and processor cycles, and a computer only has so many to go around. Determine what each icon represents and whether or not they need to be running constantly. If you think they don't then right click the icon and find that programs preferences and uncheck any box that says "Start This Program When Windows Starts" or "Run on System Startup" something like that. Also you can click Start then go to All Programs and then find the Startup folder and see how many programs are listed in there. You can determine whether you need them or not and right click and delete any that you don't.
If you feel that your computer has a virus, I'd suggest going to
www.avast.com and downloading the free antivirus client.
First, remove any other anitvirus program from your system before installing another. Never have two running as it can cause your system to crash. During the installation of Avast, select the Minimal installation. It will ask if you want to schedule a boot time scan. Answer yes to that. It will ask if you want to restart, answer no to that. Open Avast by double clicking the Avast icon on the desktop. Click Tools, then go to Updating then click iAVS Update. Let Avast update itself, then restart your computer. It will perform a boot time scan. If it stops asking what you want to do with a specific infection, select to move it to the chest.
Let me know if any of this helps.