[q] imei and no baseband topic

Guys, i have this device and had the problem where it reboots once it boots and have no imei and baseband I tried everything, EVERYTHING initially. i opened the device more times than i can remember. I changed the power button, gave it a chemical bath, removed the sim holder, adjusted every adjustable aspect of it but nothing. this started when i flashed some rom (cant remember which one), and it started rebooting as soon as the os loaded. not a random reboot but as soon as the os loaded, no matter what rom i flashed. thats when i tried all of the posted solutions on the power button issues of this phone. nothing worked.
PLEASE HELP ME!