I am hoping for a bit of advice on a HP 2133 laptop. Basically since a windows update was downloaded and installed the laptop will now not boot up at all. Each time it is started it receives a different BIOS error code. I have tried downloading the latest BIOS but the laptop does not have a CD drive and the BIOS doesn't have an option for booting from USB. I have also stripped the laptop down and disconnected the CMOS battery, left it for 10 minutes and then reconnected - still the same.
The error codes change every time, the last one I got was error code = FFFF. I have tried accessing system recovery but F11 does not direct me to the resotre facility, the option is shown - it just doesn't work.