Goooooogle is full of other people with the same problems. I tried a couple of the suggested repairs, even the ones from M$ as well, and no luck.
I recon I must do a repair install now. This pisses me off completely, as I have a service pack 1 cd only, and need to update every time to SP2, and this little laptop seems that what ever I do, only lasts a week, and then a new problem start and at the end, guess what, a format or repair install again, until next week, when a new problem will repeat the process.
I am even scared now to do M$ updates, as it seems there is a glitch as well, dating back to April 2007, and still not fixed by the mighty.
I wish I can only use Linux from now on, buy I use too many exe programs in my work to be able to go Linux only.