Chkdsk and corrupted files problem, again

Hi,

I've experienced the "corrupted file" problem. I tried to fix it via
chkdsk (run elevated), planed the scan after reboot, nothing happened.
The chkdsk did not run. tried "sfc /scannow"

So I decided to reinstall Vistas. It worked fine for like 10 days and
now again. I'm using legal Vista Business x86 (32bit) on my Lenovo N100.
- not some cracked version - original, with SP1 installed and all latest
updates.

Any ideas. I'm open to anything.

thanks in advance.


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tomas.fejfar