hi everybody.

I hope that your will help me.

I have a lenovo laptop with following model.

lenovo g 580 model 20150.

i can not enter the bios and hdd. while i clicking the f2 then system demands the system password(i think that it means bios password. because i have demount the hdd and the laptop demands system password again for three  time).

Bios battery is RTC. and nothere any cmos clear, cms clr, cmos pwd and other etc.....

I can not find these. I have got these photo. Please help me finding cmos clear jumpers..........

Where is the cmos clear jumpers?

https://www.avito.ru/sankt-peterburg/tovary_dlya_kompyutera/materinskaya_plata_noutbuka_lenovo_g580_nerabochaya_338920196

If doesnt see anythink, I have Largest photo its. But this site allows 330kb image.

Best Regards.

Must I replace the mainboard? Is it true? nothere any cmos clr on its mainboard?
It is bad structuce scheme of G580 mainboard for this lenovo brand!!!

Welcome to the Lenovo Community shandorrado !

The removal of the CMOS battery or jumper on the motherboard to clear BIOS passwords is just for desktop computers.  Laptops do not have this feature due to the ease in which they can be stolen.  Additionally this protection scheme of not allowing BIOS password clearing on a laptop is pretty much universal with laptop manufacturers like Lenovo, Dell, HP, Gateway, ASUS, etc.

If one of your BIOS passwords is set and you do not remember the password then your only option is to replace the motherboard. 

Further discussion regarding password removal is restricted by forum rules, sorry !

Moderator note:  thread locked.