My Sager Laptop, is flickering from the past two weeks?

Whenever I try to power on my Sager laptop, the screen starts flickering. I initially took it to a local service center, but the technician suggested replacing the entire screen without thoroughly diagnosing the issue—something I found suspicious.

After doing some research, including watching multiple videos from trusted sources, I learned that this kind of flickering is often caused by a loose screen connection or a faulty display cable, rather than a defective screen itself. In some cases, others have reported that RAM issues or a problematic GPU can also lead to similar symptoms.

I believe the issue might be due to an internal hardware connection problem rather than a need for full screen replacement. I’m looking for a proper diagnostic from a trusted or authorized service center to avoid unnecessary costs and ensure the correct issue is addressed.