Windows update screwed up my system

Hey guys, can anyone help me as I don't want to do a re-install of vista

I have an acer system 4200+ AMD Athlon 64x2 dual-core processor, ati radeon X-1650 se graphics card running vista home premium, 2GB ddr memory, 250GB hard-drive. I have had this system for about 5 months and haven't had a problem until yesterday......I did a windows update which installed a bit defender update, something for the x1650 graphics card, and something to do with vista media center something ? then it asked to restart the system for the updates to take effect and when it got to my log-in screen, I wasn't able to use my mouse or keyboard, it was like it was frozen? So I restarted it again and chose safe mode and the same thing.....just frozen......I I tried to restart to normal mode and just left it for a while, after about 5 minutes the log-in screen was gone and the system was running some kind of computer information movie like you see in the store where is it tells you about all the different stuff your acer system offers you and how good the sytem is etc....and if I try the mouse or keyboard it still doesn't do anything, the info movie keeps playing

Can anyone help me ?

Thanks
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Go into safe mode and uninstall the Ati update from windows update. Never accept a hard ware driver from windows update very likely they are older than the driver on your system.
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That is what I want to do.......but I can't even log onto my system to do it, when I try to boot into safe mode, it still freezes at the log-in screen
Do you know how I can by-pass the log-in screen to get into safe mode? or is there a way I can install the old driver without logging in ?
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I was not even able to access my computer in safe mode, it still froze at the log-in screen.
I was however able to access my hard drive by connecting it to my other system using it as a usb mass storage device. I was able to copy all of my importatnt files to disks incase I have to reformat.

My big question now is......does anyone know how or what file I should delete on the hard drive in order to put it back in it's system and have it able to start up again and to just have to reinstall the drivers for the graphics card. I don't know where the folder is for the graphics card updates.....I don't even know where I should begin to look
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I found a folder named "windows/system32/drivers" .....do I need to delete any or all of these ati files to get my system to boot up again?

ati2erec.dll
atikmdag.sys
AtiPcie.sys
ativcaxx.cpa
ativcaxx.vp
ativdkxx.vp
ativokxx.vp
ativpkxx.vp
ativvpxx.vp
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The above were all posts from a different forum.....can anyone here help at all ?
Thanks

 

I can only access the hard drive while it is connected as a mass storage device on my other system......I can not access anything when it is in it's own system, it freezes at the vista log-in screen, I can't even boot into safe mode or anything and restor doesn't work either.
Is there any way that I can delete the drivers for the card through the folders while it is on my old system as a usb mass storage device? If I delete the ATI folder and then reinstall the drive into it's system, will it not boot up and then ask me to reinstall the drivers or something?

Thanks

 

If you have another video card or on-board video, remove your current ATI card and use the onboard video or the other video card. If that will let you into Windows, you can then remove the ATI drivers and any other updates that may be causing the problem.
Check out this link, it could prove very helpful:
http://support.microsoft.com/kb/310602/
and here's another: http://support.microsoft.com/kb/308041/en-us