Na Fn+obrazovka počítač nereaguje, na FN+jas to už jo když zmáčknu F2 tak taky celý zčerná..

Navod v manualu jak nastavit původni settings:

To return all settings in Computer Setup to the values that were set at the factory, follow these steps:
1. Open Computer Setup by turning on or restarting the computer, and then pressing esc while the
"Press the ESC key for Startup Menu" message is displayed in the lower-left corner of the
screen.
2. Press f10 to enter BIOS Setup.
3. Use the arrow keys to select File > Restore defaults, and then press enter.
4. When the confirmation dialog box opens, press f10.
5. To save your preferences and exit Computer Setup, use the arrow keys to select File > Save
changes and exit. Then follow the instructions on the screen

co to má znamneat s tim ESC v prvnim bodě, to nevím