|When I see this "Bios has detected a non-optimal memory configuration" I suspect one of two things.|
One is memory has gone bad or needs to be re-seated in connector.
Second is bios settings have been altered.
In most bios's you can try if you are brave one thing. There is a setting for failsafe or default. It will set all the settings to common ones.
It may make your situation worse if you have only a small amount of tech skills too.
1/3 of highway deaths are caused by drunks. The rest are by people who can't drive any better than a drunk.