Has anybody been sucessful in resetting a BIOS / Supervisor password on a Presario 2100 (Model 2135US)? I got it used and took a gamble on being able to reset the pwd, but after ripping it apart, removing CMOS battery, and putting the whole thing back together, it is still locked up with the password on boot. Can't access boot sequence to use a software utility either. Tried online chat with HP, that didnt help. The only thing left to do is take it to HP Service unless somebody out there has a fix. Thanks!