Did you try usual resetting everything (take out battery, take out CMOS battery), then reboot?
yes of course i have , but no luck either .
i have taken it to authorised service center and they say they have to replcace the board (about 350 euros) and my subsequent question is : Should i accept the full cost since bios upgrade was download from the companys' site ? and now power failure took place will performing it ??
thanks for any ideas !!!!