[Q] stuck in fastboot topic

My LG G2 has been stuck in fastboot no download mode no recovery mode but when i press vol up+ vol down +power it gets a koren words(picture down)
This happend when I rooted my phone and installed TWRP

I have been 2 days searching for answer, but I didn't find
I saw how to solve it but on lunix, I have windows 7

Please help me this is new phone
I appreciate your help:good:

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