Originally Posted by alray
You'll have to post much more info about your handset if you want help. What rom/version number are you trying to flash? What is your recovery/version number? Did you MD5 check sum your rom and recovery before flashing? What is the output of fastboot getvar all (except imei/sn)
Thank you for your help. I was running the Insertcoin M8 Port and the latest TWRP recovery. The problem seems to be bigger. I took the phone to a local GSM service and the guy there (the only one repairing HTCs in the whole city) said that there was a big mismatch between the hboot and baseband (not sure if these two) and also the ROM I was using started altering the system and the internal storage (he mentioned something about clusters and how the ROM degraded the system).
There were also some artifacts on the boot screen, he assumed that there are problems from the video card. I previously owned a Nexus 4 and had no problems rooting/flashing/using any ROM. He also pointed that the ultimate solution would be to disassemble the phone and repair the memory chip but with 50/50 chances of working..