Lg Lg-x155 Flash File Mt6582 Hang On Logo Lcd Fix Firmware Page
If the phone is completely dead (no charging LED), it may be a hardware issue (battery or motherboard). However, if it connects to PC as "MTK USB Port" for 1 second, SP Flash Tool can revive it.
If no prebuilt LCD fix exists, you can:
Look for filenames containing:
...the LCD either stays black or freezes at the logo because the kernel’s framebuffer driver cannot sync. Lg LG-X155 Flash File MT6582 Hang On Logo Lcd Fix Firmware