Oops! My laptop, Compaq Presario R3230, is not working now (just worked
yesterday evening), blue screen, hangs at disk checking...when I reboot
with safe mode, it still hangs at is
multi(0)disk(0)rdisk(0)partition(1)\windows\system32\drivers\atisgkaf.sys,
I guess there is something wrong with my video driver, but how can I
fix that problem without wipe out my documents in harddriver? 
I am trying to google by it, it seems some guys also got that problem, some steps are suggested:
1.  Insert the QuickRestore CD into the CD drive and restart the
    system. 
2.  When the red Compaq logo appears, press and hold the Caps
    Lock key.  Next screen will be a blinking QuickRestore screen. 
3.  When the QuickRestore text stops blinking, press and hold the
    Num Lock key. 
but where can I get QuickRestore CD? included CD seems not in my room any more...anybody has thought about that?