USB Blaster stopped working with Quartus 10.1

Hello

I've got a problem with Quartus 10.1 and USB Blaster. When i first installed and run Quartus everything worked OK, but when i rebooted computer and tried to make second project Quartus stopped working with blaster. When i press start in "Programmer" LED in Blaster blink and Quartus says "Programmer operation was NOT succesful". In "Hardware setup" i can see my USB Blaster in USB 0. In "JTAG Chain debugger" in JTAG Chain Integrity" when i run test i got message "JTAG chain problem tedected" and "No device detected" and in "JTAG Chain Debugging" i got "Incorrect clock value".

I've got windows 7 64bit

I installed drivers from Quartus 10.1