H123636:  BIOS INFO / UPGRADE: EX. 2640 HANGS WITH EDO SO DIMM.                
                                                                                
 Symptom:                                                                       
 When operating with a 16, 32, or 64 Mb EDO SO DIMM installed,                  
 the system may hang and stop processing.  It will be necessary                 
 to shut down and reboot the system to clear the hang and                       
 continue operation.  The condition can occur using any operating               
 system.                                                                        
                                                                                
 In Windows the hang is a General Protection Fault (GPF), in OS/2               
 it is a TRAP error.                                                            
                                                                                
 PROBLEM ISOLATION AIDS:                                                        
 BIOS update 1.05 is NOT installed.                                             
                                                                                
 FIX:       IBM PCCP BBS file name "sytpk105.exe"                               
 Install BIOS upgrade (System Program) version 1.05 to allow                    
 correct 16, 32, and 64 Mb EDO SO DIMM usage.                                   
                                                                                
 NOTE, A NEW FEATURE HAS ALSO BEEN RELEASED UNDER BIOS 1.05:                    
                                                                                
        This BIOS version also adds a Hard Disk password function               
        to the 2640 system. If this is set and the HDD password                 
        is forgotten the HDD can NOT be used. The password can                  
        NOT be removed unless the existing password is known.                   
        To recover from a forgotten password the HDD must be                    
        replaced.  This is NOT covered by warranty.                             
                                                                                
  _____________________ IMPORTANT________________________________               
 |  Diskette based fixes are customer installable. Customers    |               
 |  should be advised to contact the IBM PC Company HelpCenter  |               
 |  at 800-772-2227 if assistance is required in getting or     |               
 |  installing this information.                                |               
 |                                                              |               
 |  Files are located on the PC company's Bulletin Board Service|               
 |  (BBS). The direct line for modem connection to The PC       |               
 |  Company BBS is 1-919-517-0001 or tieline 255-0001.          |               
 |                                                              |               
 |  Customers in Canada should call IBM's HelpPC at 800-565-3344|               
 |  for Assistance or down load information.  The Canadian BBS  |               
 |  phone numbers are:                                          |               
 |  Montreal-514-938-3022, Toronto-905-316-4255,                |               
 |  Winnipeg-204-934-2735, Vancouver-604-664-6464.              |               
 |                                                              |               
 |    The data may also be downloaded via the Internet from     |               
 |    the IBM Personal Computer File Library by searching the   |               
 |    following Internet URL: http://www.pc.ibm.com/files.html  |               
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