2009 Toyota Prius wont start only goes into neutral

My neighbor has a 2009 Toyota Prius. It drove fine one day and wouldn't start the next day. He has checked his 12v battery, oil, coolant and brake fluid. All fluids were a little low. We did get someone to come over and check the codes. This is what he wrote down.
C1259 hv system regenerative malfunction
C1310 malfunction in hv system
C1241 low on high voltage
C1242 open circuit on I62
C1300 malfunction in engine central unit
C1313 open circuit main relay 2
C1377 c (something) malfunction
I might not have everything he wrote down right. Trying to read his handwriting from a picture sent to me. If anyone can help out and let me know what you think is wrong and what we need to replace, I would appreciate it. He is on a fixed income and is disabled. It is his only car. Thanks