Laptop not working

Since few days there is problem in the boot, system restarts itself again, sometimes it shows system repair it attempts but does not find solution then a silver screen appears. Then it does nothing, i have to forcefully shutown using power button. Recently after chosing normal startup while booting without opting repair a red screen appeared. After that again i pressed power buttonn restarted the system then a blue screen appeared. my battery is not functioning prperly it gets drained and doesnt charge. I havnt switched on after that, what should i do, will there be a data loss. please help.

My laptop is toshiba L300 and im using windows 7.