Bricked HTC One M7 can't get into RUU mode

Hello gays! My HTC One M7 is Hongkong CHT edition.
This is the PIC took before flashed RUU. I faced "commandline over flow" problem.
"fs1.d-h.st/view/iCnH/00197/1.png"
I've tried the "Unbrick project BETA" from the forum and flashed bcb recovery to my device, but neither worked.
Finally I decided to flash an official RUU to my M7.
First I relocked it. Then I flashed the RUU "PN07IMG_M7_UL_L50_SENSE60_MR_hTC_Asia_HK_7.18.708 .2_Radio_4T.35.3218.29_10.33R.1718.01L_release_420 559_signed.zip" from the RUU collection thread.
But in the process of flashing RUU I suddenly kicked off the power of my desktop PC !!!
Now it has became like this.:(
"fs1.d-h.st/view/vQn3/00197/2.png"
It is totally bricked. It will only boot into fastboot and cannot do any further action except "power down". Other will just make the phone hang. Fastboot mode can be detect by computer.
Below is the commandline output of my phone:

C:>fastboot getvar all
(bootloader) version: 0.5
(bootloader) version-bootloader: 1.61.0000
getvar:all FAILED (status read failed (Too many links))
finished. total time: 9.453s
htc_fastboot finished. total time: 9.609s

C:>fastboot oem rebootRUU
...
FAILED (status read failed (Too many links))
finished. total time: 39.609s
htc_fastboot finished. total time: 39.703s

The htc_fastboot command "oem rebootRUU" and "getvar all" will make the phone stucked and I have to long press power button to shutdown
Now I cant even make the phone get into RUU mode! But I can boot into hboot with volume- and power button.
What's the proble? How could I do to recover my phone?