Sudden reboot after return from hibernation (CFP X64)

Please, the system reboots just after return from hibernation, and does not wake up from standby - this happens since the install of the Comodo firewall - train mode, but with any mode same problem. System data:

Windows XP64 Pro SP2
Asus P5B-DX-WF - BIOS 1.226
CPU Intel C2 E6600 1.264V 2.4Ghz stock
4GB DDR2 667 Kingston stock
Nvidia FX1400

No BSOD, just blank screen after first mouse movement when at the login menu.

Thank you for attention.