help conecting an s7562

Hi guys. I receive an Samsung S7562 "dead". No possible to enter in download mode because i can't see nothing in screen, but after connect the phone to computer without power on, the computer detect SAMSUNG USB COMPOSITE DEVICE. In The z3x soft, in the conecction box appears COM17 Samsung mobile modem diagnostics, but after select that and try to flash it this is the log



Selected model: S7562

Selected port: COM17 SAMSUNG Mobile Modem Diagnostic Serial Port (WDM)

Selected port speed: 115200

File analysis... OK

Total file size: 0x3BAD3474

Searching USB Flash Interface... not found

Done with Samsung Tool v.17.3



What can i do to try to repair it???



Thanks a lot in advance.

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