I made a huge mistake! My friend told me that I should flash my bios. I didnt know that he doesnt know how to that and that he thought that he would learn on my computer. What fool I am! Now I cant start anything! What happened with my bios? I only can tell you that he boot some diskette in floppy drive and nothing more.
Your friend corrupts your bios. But dont worry. Ill try to explain you how to repair it. You can always try to copy on bootable diskette autoexec.bat. Also you should copy award flasher and the correct bios .bin. After that execute it by putting awdflash .bin in autoexec.bat file.
If this wont work, I recommend you to contact your mother board manufacturer and nicely ask them to send you bios chip for your mother board.