Diky moc za snahu pomoct.
Napsal jsem mejla take primo gigagytum a jejich odpoved zde kopiruju, pokud by to zajimalo i ostatni. V podstate rikaji to same, reset CMOS tim, ze vytahnu baterii na 10 minut, potom vratit zpatky, dat F1 a naloadovat default bios. Pokud to nezapari, tak hledat pomoc, kde se da. U me to znamena, ze pujdu prepalovat do GM. Dostanu se na to az v sobotu, dam vedet, jak jsem dopad.

About the issue you mentioned in the mail, please clear CMOS first to try if the system can boot again.
1) Turn off power.
2) Remove the power cord from MB.
3) Take out the battery gently and put it aside for about
10 minutes or longer. (Or you can use a metal object to connect the two pins in the battery holder to make
them short-circuited.)
4) Re-insert the battery to the battery holder.
5) Connect power cord to MB again and turn on power.
6) Press F1 to enter BIOS and load fail-safe defaults setting.
7) Save changes and reboot the system.
If system boot failed, probably there's something wrong during BIOS flashing and caused BIOS currupted. please contact with local reseller or distributor to send to RMA for checking and repairing.