Why my kali linux os is stops working AFTER 1-2 HOUR?

My Kali Linux OS is working fine but after a time period(like every 1-2 hour after) everything is suddenly stops nothing working only mouse courser moves but when i click on any icon it is also not working then I restart my system then it works fine but after some time period it stops again in every applications. please help me. system description: RAM 4GB INTERNAL HARD DISK HDD 1TB GRAPHICS 2GB PROCESSOR i5 10400 MOTHERBOARD ASUS PRIME H410M-E MOTHERBOARD