Entering boot loader without volume

I have chacha without root and volume down button is not working how can enter boot loader in this situation to unlock it.

GT-N7000...

tablet not entering recovery or download mode

my samsung tablet went through a tough time because it had no os and wasnt installing one so i went to odin and downloaded the stock rom then flashed it by odin while my tab was connected in download mode. suddenly the connection got unplugged while installing the new rom leaving me with a black screen. the real issue here is that i cant save my tab because it doesnt get to recovery nor download mode so im basically left with a useless piece of junk. i think there is a way to get it back because my computer recognizes it but odin doesnt. if i could get it to boot into download mode, i can get it back. but i dont know how...
my tab is samsung galaxt tab 3 lite sm t111.
pls help urgent!!!

gcqn tool is stuck in "entering bp download mode"

i have a BLU Life Pure XL and i want to flash the stock rom, but when i m going to do this, the gnqc gets stuck in "entering bp download mode". can someone help me?

Failed atempt at entering Fastboot

Hello guys. I've recently got a Z3C and I wanted to flash a custom recovery on it so I can install another rom. I've unlocked my bootloader, no issues there, but when I powered down my phone and pressed volume up and connected it to the pc, it started installing some drivers and power went out. Now my phone is pretty much dead, I can't get into fastboot, nor flashmode. I reinstalled pc companion and the Z3C drivers from flashtool but nothing happens. When I connect my phone, in device manager this is all I get " Qualcomm HS-USB QDLoader 9008"

Is there anything I can do with it? Or is it just a pretty looking paperweight now?