759038f8_Computer_troubleshooting__SOLUTION
[PROBLEM] One of the applications which has frozen is TCP3270 or RLIN [SOLUTION] 
Make sure application is really frozen by moving mouse, try and minimize. Press ctrl./alt./del. & look to see which application has stopped responding. Return to Windows, close all other applications, exit Windows. At C prompt turn computer off at the power button, wait up to 30 sec. & turn back on, at C prompt type win. This is known as a cold boot. Necessary with networking applications to clear the account.
Computer troubleshooting
SOLUTION