Everytime I boot up the keyboard works for me to go to BIOS or Boot menu but once I get to the login page it stops working. I noticed that people are saying disable device signature enforcement or something but I can't find that in my BIOS. I have an Asus motherboard model - M4A88t -V
Please help me so I can use my computer lol
If both are usb your system needs to load the drivers this can take anywhere from 5 to 15 mins if not try pressing f8 and go into safe mode then see if both load the drivers you should not need to disable device signature enforcement ,try unplugging keyboard and mouse and replug them in while in safe mode.
Look in the control panel and device manager and look at for exclamation marks you may need to re-install your chipset drivers.