Why has my cursor become very laggy?

Hi,
For some reason my cursor has become very laggy since getting Delayed Write error messages causing my system to screw-up. I finally reinstalled a new Windows on drive D, my old (not working) Windows is in drive C. Now when I scroll pages on the net or in applications it is very slow to respond and is unstable.
This also complies with moving windows. When I move a window it also becomes very jumpy. My system was fine until I got those error messages ages ago. Is there a way I can fix this?
Thanks
Message was edited by: lewislite

My problems first started when 'Delayed Write Failed' messages just popped up out of the blue.
When this happened my system was completely unresponsive for 10 minutes, I could only move the cursor. I think after a while my system rebooted itself and a got the blue screen checking my disks for errors.
After waiting for that I logged back in to find that my cursor 'jumps' shortly after several seconds of moving it. What I mean is I can move it fine for like 2 seconds but then it pauses very shortly and quickly resumes, 'leaping' to what ever direction I was moving it in, so I lose where I was pointing it to.
A few login's later and the error message popped up again - totally uncalled for. I was only using a software to edit videos when it popped up again. Well, after this I ended up switching my laptop back on to find 'Windows\System32\Config\System is corrupt or removed press 'r' to begin repair on Recovery Console using your Windows CD'.
I get to the screen and press 'r'. I don't know what to type in to fix my installation of Windows (drive C) so I hit exit and chose 'new installation' instead. It asked me to save my new Windows onto drive C or D. Drive C has everything on it, my pics, music, docs and most importanly drivers and programs - mainly the Toshiba stuff I need. I'm afraid if I chose to install on drive C all the stuff mentioned above would be wiped clean. Thank goodness for drive D then, so D it was.
When Windows finally installed on Drive D, I discovered my cursor was the laggy one as before and now a new problem; scrolling pages; and moving windows. It's very slow to scroll and it's so unstable it takes me to the top or bottom of the page when I move the scroll bar in that direction. Moving windows is very jumpy and unstable too.
So there you go, that's my problem. Thanks for reading.
P.S If someone could tell me how to repair Windows on drive C, I would be most grateful.
Message was edited by: lewislite

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Hi Clinton
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MacBook Pro (15-inch Core 2 Duo) (Verified)
MacBook Pro - model: MacBookPro2,2
1 2.33 GHz Intel Core 2 Duo CPU: 2 cores
2 GB RAM
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ATY,RadeonX1600 - VRAM: 256 MB
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spdisplays_display_connector
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Logitech USB Receiver
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