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      6.14.10.4501
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 (6.14.10.4501, 1.27 MB (1,330,172 bytes), 3/7/2005 8:04 AM)
sheana11Asked:
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CallandorCommented:
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.
wstuphCommented:
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?
rindiCommented:
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.
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r-kCommented:
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.

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nobusCommented:
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.
rindiCommented:
Replace your mouse, uninstall the current mouse driver.
nobusCommented:
try this : uninstall/ reinstall Internet explorer from add/remove programs>add/remove windows programs
nobusCommented:
can it be a virus or malware? in that case, i suggest running all these in safe mode, preferably with system restore off :

     adaware :      http://www.lavasoftusa.com/
     Spybot :        http://www.download.com/3000-8022-10122137.html
http://housecall.trendmicro.com/                                                                      online scan for trojans
http://www.spychecker.com/program/hijackthis.html                                            download
http://www.hijackthis.de/index.php?langselect=english                                         check the log
http://www.microsoft.com/athome/security/spyware/software/default.mspx          Anti spyware
http://www.ravantivirus.com/scan/                                                                        virus scan
http://www.avast.com/
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.
rindiCommented:
Thanks too.
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