manuleka 0 Report post Posted November 8, 2011 This error frequently comes if the battery saving your cmos settings is out of order.usually rebooting allows the keybord to work again, and you can press F1 or F2 and continue working.If this is the case, you will have to leave your PC plugged on the AC outlet, else you will have this problem each time you remove the power cable. had similar issue before on my PC, i replaced CMOS battery and it fixed it... Share this post Link to post Share on other sites