𝙋𝙧𝙤𝙗𝙡𝙚𝙢 : Computer keeps hanging.
𝘾𝙖𝙩𝙚𝙜𝙤𝙧𝙮 : Software/Hardware.

❚█══Reasons══ Software █❚
1. Virus
2. Multiple antiviruses

❚█══Solutions══█❚
1. Scan your PC thoroughly with antivirus.

2. Do not install more than one antivirus on your PC at the same time.

❚█══Reasons══ Hardware █❚
1. RAM

❚█══Solutions══█❚
1. Check if the RAM is properly seated in the slot.
2. Use RAM with the same bus speed.