Asrock extreme 6 z77

i got a asrock extreme 6 z77 mobo guys...............when i try to formay my pc ..........when i enter the boot menu my USB keyboard and USB mouse stops working ..............i mean there is no power passing through the mouse and keyboard as a result m unable to move the cursor ...............i restarted my pc and entered boot again & again..........did that for several time but no use


guyzz plzzz help ????


i have the warranty too


if it is a damage on mobo please tell me ill void my warranty
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  1. Check the CMOS settngs and see if the USB3 is set to compatibility for USB2. USB3 should be compatible with previous editions, but I had an issue with the USB3 ports on my P67 Extreme6. On my Z77 Extreme6 there is a setting in CMOS for USB compatibility and, I believe that it defaults to compatibility mode.

    If you can't access the boot menu with your keyboard/mouse, see if you can borrow someone elses. Alternatively you can use a PS2 keyboard.
  2. chesteracorgi said:
    Check the CMOS settngs and see if the USB3 is set to compatibility for USB2. USB3 should be compatible with previous editions, but I had an issue with the USB3 ports on my P67 Extreme6. On my Z77 Extreme6 there is a setting in CMOS for USB compatibility and, I believe that it defaults to compatibility mode.

    If you can't access the boot menu with your keyboard/mouse, see if you can borrow someone elses. Alternatively you can use a PS2 keyboard.



    awesome dude !! that could actually be the problem .................buddy can u please tell me how to check CMOS settings
  3. chesteracorgi said:
    Check the CMOS settngs and see if the USB3 is set to compatibility for USB2. USB3 should be compatible with previous editions, but I had an issue with the USB3 ports on my P67 Extreme6. On my Z77 Extreme6 there is a setting in CMOS for USB compatibility and, I believe that it defaults to compatibility mode.

    If you can't access the boot menu with your keyboard/mouse, see if you can borrow someone elses. Alternatively you can use a PS2 keyboard.


    dude i use PS2 interface keyboard it works fine but ...............i don understand why a usb keyboard is nt working
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