Grab the USB imaging tool

http://downloads.dell.com/wyse/USBFT/

and reimage it using the merlin image available here.

https://appservices.wyse.com/pages/serviceandsupport/support/dlOraFW.asp?which=129&model=C50LE(Wyse%20Linux)

You may need to test different versions of that tool as the device is quite old.

Unfortunately, that device is end of life and unsupported.  I do not have any recommendations.

got it fixed. thank you

but the browser which is included (firefox) is very old version and I cannot pull up any image going out to the internet. very slow too.

any idea?