Hello and welcome to JustAnswer, I look forward to assisting you today. When do you see the error code?
Okay, try this. Shut down the computer. Press the Novo button. From Novo Button Menu, select System Recovery and press Enter.
Okay then, give this a try. Restart and as it begins to boot, start tapping the F11 key about once per second and see if this brings up a recovery menu.
What was it you installed before the problem began?
What changes? Can you give me any details please?
Is it possible to enter safe mode and reverse the changes?