cyclone config problem in my board

Hi
I have made a cyclone board.But when I download with jtag in quartusII.It
reached 80% and then said "Error: CONF_DONE pin failed to go high in device
1".
How should I solve the problem?Thanks!
Best Regards

I have connected nCE to GND but the error is the same:(

"kingkang" <305liuzg@163.net> wrote in message
news:cl9om7$tol$1@mail.cn99.com...
> Hi
> I have made a cyclone board.But when I download with jtag in quartusII.It
> reached 80% and then said "Error: CONF_DONE pin failed to go high in
device
> 1".
> How should I solve the problem?Thanks!
> Best Regards
>
>