I have msi mp5 b550 gaming edge Motherboard , there is always a red light stays on and it indicates cpu and my system sometimes doesn't start and sometimes it start and my ram slots were in A1 and B1 . but from few days when i change ram slots to A2 and b1 red light goes off and computer works everytime ? What could be the problem ? Plz don't tell ram slot is faulty as my pc works for 1-2 days then suddenly it stops till i remove and put ram back but red led shows error in cpu .