problem solved by reinstalling the third time,this time i use the link in brianzion's post above and every thing is back to normal so thank you every one
My Computer
At a glance
64intel core 2 quad Q95508 GBasus EAH5770
- Computer Manufacturer/Model Number
- jorge's first
- OS
- 64
- CPU
- intel core 2 quad Q9550
- Motherboard
- asus p5qpro turbo
- Memory
- 8 GB
- Graphics Card(s)
- asus EAH5770
- Sound Card
- in motherboard
- Monitor(s) Displays
- syncMaster T26HD
- Screen Resolution
- 1920 - 1200
- Hard Drives
- intel x25-M sata
hitachi sata 1 TB
- PSU
- 750 watt
- Case
- thermaltake
- Cooling
- ultr x wind for 775