i will have a look tomorrow morging at the restart of my pc..it' s at this moment that the freezing happens the video Driver is not updated... since i 'have reinstalled windows7 +sp1 by now i have this .. and all is fine.. thks a gain.. i've learned a lot of things 2day with u see u 2morrow with new traces!! _________________________________________________________________________________________________________ REPORTED DPCs _________________________________________________________________________________________________________ Highest DPC routine execution time (µs): 7423.1167 Driver with highest DPC routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation Highest reported total DPC routine time (%): 0.1495 Driver with highest DPC total execution time: rspLLL64.sys - Resplendence Latency Monitoring and Auxiliary Kernel Library, Resplendence Software Projects Sp. Total time spent in DPCs (%) 0.5522 DPC count (execution time <250 µs): 544676 DPC count (execution time 250-500 µs): 0 DPC count (execution time 500-999 µs): 171 DPC count (execution time 1000-1999 µs): 47 DPC count (execution time 2000-3999 µs): 68 DPC count (execution time >=4000 µs): 0