need help

recently my computer freezes all the time, only the arrow can move around, but when i click on any programs it won't respond, every time when it happens to freeze is after i use the usb memory stick, but when i done with that, it say ejecting program, try it later.
is my computer infected,or missing something, please help, thank

 

It could very well be USB drivers conflicting with your OS.

1. What is your operating system, i.e. XP? Vista?

2. Have made any updates or hardware changes?

3. Have you scanned for viruses? in addition, do you have a router, anti-virus program, etc. for protection?

 

thanks for your respond, i do have router, windows xp home edition, i have comodo anti virus and scanner.

 

When did this problem first occur?

Did you make any changes or updates to your system?

What make is your PC?

 

h/p media center, it starts happened about last week, i did update anything on it

 

My suspicion is that it is your USB drivers or your network card. I would find the make and model of your HP and go to their website and upgrade your USB drivers.