Monitor display scrolls up and down by itself...don't know if hardware/software problem

I have a Dell Dimension Desktop with WinXP Home Edition.  I worked with a Dell technician and they couldn't help.  Below is the information about the driver, which I reinstalled.  I even tried the monitor vertical/horizontal adjustment settings and that didn't help.  Kindly advise as the problem is driving me crazy. Thanks in advance.  Since Dell support couldn't help me, I'm assigning a 500 point difficulty.

Name      NVIDIA GeForce FX 5200
PNP Device ID      PCI\VEN_10DE&DEV_0322&SUBSYS_01B910DE&REV_A1\4&1246FE7B&0&0008
Adapter Type      GeForce FX 5200, NVIDIA compatible
Adapter Description      NVIDIA GeForce FX 5200
Adapter RAM      128.00 MB (134,217,728 bytes)
Installed Drivers      nv4_disp.dll
Driver Version
INF File      oem1.inf (nv4_overlay_OutputDevice_NV34 section)
Color Planes      1
Color Table Entries      4294967296
Resolution      1024 x 768 x 75 hertz
Bits/Pixel      32
Memory Address      0xFD000000-0xFEAFFFFF
Memory Address      0xF0000000-0xF7FFFFFF
IRQ Channel      IRQ 16
I/O Port      0x000003B0-0x000003BB
I/O Port      0x000003C0-0x000003DF
Memory Address      0xA0000-0xBFFFF
Driver      c:\windows\system32\drivers\nv4_mini.sys (, 1.27 MB (1,330,172 bytes), 3/7/2005 8:04 AM)
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Try a different nVidia driver - each version can have quirks of its own.  Check the cable also, because a bad connection can lose sync.  Finally, try a different monitor, which you may want to attempt before anything else, because it may just be old.
What do you mean by scrolls up and down?  The image on the screen is moving up and down, or it's like a web page scrolling up and down as if you were using the scroll bar on the right side of the screen?
Please explain more clearly what you mean with automatic scrolling. Do you mean you are in a browser and the scroll bar scrolls up and down, or is it more like a badly adjusted TV, where the picture doesn't synchronize? What type of monitor are you using, is it a CRT or a LCD?

If it is like the scroll bar gets moved automatically, try using another keyboard or / and mouse. Maybe a key got stuck. If it is the picture that doesn't synchronize and you are using a CRT, then the monitor probably isn't adjusted properly internaly, then it is best to get it adjusted by a Radio/TV shop.
Your Guide to Achieving IT Business Success

The IT Service Excellence Tool Kit has best practices to keep your clients happy and business booming. Inside, you’ll find everything you need to increase client satisfaction and retention, become more competitive, and increase your overall success.

If you mean that it acts like the scroll bar is being moved by itself (as opposed to the entire desktop moving up and down as with an unstable vertical hold), then I'd suggest trying a different mouse.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
if your screen image scrolls like the image on old TV's, then there is a sync problem.
To diagnose , you can try a different monitor, or try this one on  another system.
you can also try another video card, even a cheap PCI one will do.
sheana11Author Commented:
To clarify what's going on, imagine if you left-clicked and held the vertical scroll bar on the right side of a web page, and moved it rapidly up and down.  This happens all by itself, and makes reading almost impossible. THis does not happen if I have an application open, such as MS Office, but seems confined to web pages only.  The computer is not even two years old. I have a flat screen monitor from Dell. I hope this helps. Thanks again.
Replace your mouse, uninstall the current mouse driver.
try this : uninstall/ reinstall Internet explorer from add/remove programs>add/remove windows programs
can it be a virus or malware? in that case, i suggest running all these in safe mode, preferably with system restore off :

     adaware :
     Spybot :                                                                      online scan for trojans                                            download                                         check the log          Anti spyware                                                                        virus scan
sheana11Author Commented:
Thanks for all the great suggestions. I learn something useful every time even if it isn't the solution. However, I switched the mouse from another computer, and that solved the problem. Bad mouse. I don't understand my luck with Dell, because so far they sent me bad RAM and now a bad mouse. This is the first time I ever bought a Dell computer and it's been Dell Hell.
Thanks too.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.