I start over again.
My problem is I lost my Nvidia MX150 after updating to V1. 21 bios.
Even after I update my bios to 2.02, MX 150 also not detected.
I have read acer forum and found that the BIOS V1. 21 has VBIOS of MX130 and flashing with it had override my MX150.
so my problem is...