Vrata 10 Posted February 7, 2015 Hello everyone.I had serious problem . Afer repairing my lenovo y500 i have problem. My chip on MB (some chip dont know wich, but it wasnt bios) burned. So i gave the laptop to proffesional hands and it is working, BUT the bios can see no serial number (this isnt quite problem), AND the keyboard numlock doesnt work. I think its because of that BIOS thinks that this is lenovo y400 and y400 has no NumLock. Please help me.So much thank you. Sincerly,Vratislav Rusz Quote Share this post Link to post Share on other sites