Every two or 3 days my Google resets and all the extensions (funmoods and asktoolbar, etc) come back. My adblock plus also dissapears. How can I fix that?
It could most probably be a virus or malware . Google Chrome doesn't reset every 2 or 3 days. That's weird! You should update your anti-virus scanner and let it scan your PC for you. Or you can always uninstall that and re-install Chrome and check if the problem exists. If not, you're lucky. If yes, then it's probably a virus. Finally, do you sync your Chrome? Once you're synced your previously installed extensions will come back since they remember your previous extensions...
scan pc in safe mode if possible with superantispyware, malwarebytes antimalware
also try adwcleaner
after this clean pc with ccleaner