[SOLVED] PC won’t start anymore after mixing old and new RAM

[ace010101]

Today I had received new ram. I had added the new ram to the spare two slots not realising that isn’t a good idea (old and new ram). Now the pc wouldn’t boot. I tried to reinstall the old RAM and it still won’t work. I had removed the CMOS battery and put it back and that also didn’t help. What do I do now?

 

[Lutfij]

Disconnect from the wall and display, clear the CMOS and reseat the old set of rams, then try to power up the build.

+
When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the rams you were trying to work with(old and new) and the age of the PSU apart from it's make and model.