dell windows on an HP media pc

My friend recently dropped his firewall and did not realize it until it was to late. A:confuseds a result had 238 infections get into his system. The scrolling became so bad and all the other issues that arose, I decided to reload windows. Unfortunately he did not have the recovery disks. I had my set from dell. I have a dell inspiration desk top. He has a HP media center 7320. I got everything fixed except for one thing.
The scrolling is still bad. It is a rolling motion that is beyond aggravating. He has an NVINDA gforce 7300 video card. Every time I get a driver, I have errors loading it to the system. So it reverts back to using a standard VGA driver. I believe that is the problem. I guessing because I used the dell windows recovery and it’s a HP machine that is the problem. Is there a driver anywhere that can help this situation?My friend recently dropped his fire wall and as a result had 238 infections get into his system. The scrolling became so bad and all the other issues that arose, I decided to reload windows. Unfortunately he did not have the recovery disks. I had my set from dell. I have a dell inspiration desk top. He has a HP media center 7320. I got everything fixed except for one thing.
The scrolling is still bad. It is a rolling motion that is beyond aggravating. He has an NVINDA gforce 7300 video card. Every time I get a driver, I have errors loading it to the system. So it reverts back to using a standard VGA driver. I believe that is the problem. I guessing because I used the dell windows recovery and it’s a HP machine that is the problem. Is there a driver anywhere that can help this situation?

 

I have updated windows to service pack 3. There are yellow question marks by the video and other under the video. I don't have the mother board handy so I can get the number. Is there an easy way..other then opening up the pc to get the mother boards id.Thanks in advance for all your help

 

I have applied the driver and all the other updates that you requested. The screen still is scrolling and is not functioning as it did before. What can I do now to stop the scrolling and return the scrolling to it's regular state. All help is welcome.. and again thanks for your replies in ad vance
:cry