'IO errors - 1, tolerance2' pls HELP

[NexuSnajper]

Hello, Please help me, i have problem.
Whem i push Start mining, program tell me:
'no response to getwork, using as stratum'
'Failed to subscribe'
'IO errors - 1, tolerance2'
 
Please what happend?
What i must do? I restart my computer two times but no changes.
Help..
Thanks. 

[NexuSnajper]

http://i59.tinypic.com/ajoz7q.jpg
Pls help me.. ( what i must do?

[nachius]

More info is needed:

What Video Card, What drivers, what OS, What SDK.

In Guiminer click view and show console and see what the error says in there.

This sounds like a driver problem to me, but still need information.

[NexuSnajper]

Windows 7 , AMD Radeon HD 6850

"2014-03-08 14:03:31: Listener for "Default": api2.bitcoin.cz:8332 08/03/2014 14:03:31, IO errors - 1, tolerance 2
2014-03-08 14:03:33: Listener for "Default": api2.bitcoin.cz:8332 08/03/2014 14:03:33, IO errors - 2, tolerance 2
2014-03-08 14:03:35: Listener for "Default": api2.bitcoin.cz:8332 08/03/2014 14:03:35, IO errors - 3, tolerance 2
2014-03-08 14:03:35: Listener for "Default": api2.bitcoin.cz:8332 08/03/2014 14:03:35, No more backup servers left. Using primary and starting over."

once it goes and once again not
yesterday evening it was not but today morning it was good, but now again not.
pls help.