Oneplus Two display does not work after turning on (but sign appears)

My Oneplus two device is in a really strange situation. When I turn on and off my device I`m able to see the Oneplus logo but thats all. Afterwards I have a black screen on my device. Everything is working like the fingerprint or the volume up and down. I`ve already rebooted my device several times but nothing helps. This condition was not from the beginning. The first 2 two weeks everything was fine and suddenly nothing responded. After turning off and on the device had the situation as described. What can I do??
Thanks

Micromax a37 nothing appears by pressing any button but it is detected by computer.

I am using micromax a37 bolt and it has only 107MB internal so I rooted it and used Link2sd app for putting every app into sd card and I did it but after doing that I ran into some problem with all apps suddenly stopped and I will end up factory resetting every time. This time I used mounts2sd and I created the startup script and init.d. When I rebooted for mounting the sd card second partition, it booted for more than 10 minutes so I factory resetted it. But after resetting also when I tried to boot, it boots for a long time. So I thought of flashing the stock ROM and I used it with sp flash tool but I get an error S_FT_ENABLE_DRAM_FAIL (4032). Now the phone does not show up anything when I pressed the power button or any combination but when I connect it to my computer it is detected and the sp tool gives same error. During the flash I first tried with a37 stock ROM but second time I wrongly downloaded a37b stock ROM from another site but I got the same error in both cases. I tried different sp flash tool versions. Here is the logs from Sp flash tool.

I am making this thread so that any one who are in a similar problem can get solution from someone who gets it. Thank you

Rooting -LG G3 (D851) Lollipop 5.0.1 Appears to work but doesn't.

Hello, I have an LG G3 (D851) Lollipop 5.0.1 And I have tried to root it with many different programs or manually band each times everything goes smoothly it says "Done" but the phone is not rooted ? What can I do ?

I have tried the following :

LG One Click Root (Visual)
LG One Click Root (Prompt)
PurpleDrake-Lite
LG Root Script v1.2
Kingroot
Newest root method V03
Towelroot

Here is what one click root says :

Starting adb server...
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
Waiting for device...
Device detected!
Pushing files...
4432 KB/s (1048328 bytes in 0.230s)
316 KB/s (9226 bytes in 0.028s)
4150 KB/s (4017098 bytes in 0.945s)
Rebooting...
Looking for LG serial port...
Phone found at COM4!
Rebooting into Download mode...
Waiting for device...
Phone found at COM4!
Rooting phone...
Author : blog.lvu.kr
SPECIAL COMMAND : ENTER, LEAVE
#
- Mounting /system, /data and rootfs
- Extracting files
- Disabling OTA survival
- Removing old files
- Placing files
- Post-installation script
- Unmounting /system and /data
#
Done!

They seem to work but then nothing happens on the phone, it's not rooted. Do you have any idea why ?

Thank you for your help.