The IMEI (International Mobile Equipment Identity) is stored in the phone’s —a partition on the chipset that survives reboots. On the Alcatel 2008G (typically powered by a Spreadtrum/Unisoc or MediaTek chipset, depending on the variant), the IMEI can be erased or corrupted by:
These are essential for the PC to "talk" to the phone's processor. Check the Cable: alcatel 2008g imei repair