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Service Hints & Tips

Document ID: RMIE-38ZC4E

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IBM PC - System hangs with distorted video after Windows logo

Applicable to: World-Wide

Symptom :
IBM PC 300 & 700 Series 6577, 6587, 6877, and 6887 systems may exhibit the following error conditions after starting either Windows 3.x or Windows 95:

- System hang condition with the Windows 3.x logo displayed on the screen.

- System hang condition and a blank display after displaying the Windows 3.x logo.

- System hang condition with blue and/or black horizontal bars across the display after displaying the Windows 95 logo.

These failures DO NOT occur on systems running OS/2 2.x or 3.x.

Problem Isolation Aids :
A limited number of PC 300 and 700 Series 6577, 6587, 6877, and 6887 systems manufactured prior to 8/6/96 (Date of Manufacture is printed on the IBM shipping carton) may contain a video memory module that may intermittently cause the symptoms stated above.

This tip applies ONLY to those systems with the following system board assembly part numbers and an NEC video memory module in location U23 on 6577/6587, or U22 on 6877/6887 system boards:



    System Board       6577/6587                 6877/6887       

    Assembly P/N's:    93H1675          96G3713, 96G3715, 96G3730

                       93H1677          60H7885, 60H7884, 60H7886

                                        60H6948, 60H6950, 60H6952



           FRU P/N:    93H1699                   60H7020

  NEC video module:      U23                       U22



                 NEC424210_60_A

                   96xxH5011

                    (xx = Date code range from 9610 to 9615)

The 6877/6887 systems contain 4 soldered video modules. Only the module in position U22 is affected by this problem. The same applies to the 6577/6587 systems with an NEC module in position U23. The 6577/6587 contains 2 soldered video modules.

The video memory is located at the left rear of the system board, next to the larger S3 module.

All other system board assembly part numbers with NEC video modules within the date code listed have been modified to eliminate the potential of failure.

NOTE: Not all NEC video memory modules matching the criteria above will fail. The failure symptom is highly intermittent and only occurs with Windows 3.x or
Windows 95.

Fix :
Indications of this highly intermittent failure will occur early in the product life or not at all, following the introduction of Windows 3.x or Windows 95. The potential for failure does not become greater as the product ages.

The system board should be replaced in systems exhibiting the failure symptoms and meeting the criteria above.



SAS Keywords :

PSVP               PSY2               PSVPMEM            PSY2MEM

PSVPPART           PSY2PART           PSVPBRD            PSY2BRD

PSVPERR            PSY2ERR            PC 330             IBMPC

PC 330             PC 350             D/T6586            PSVPDISP

PSY2DISP

Search Keywords

Hint Category

DOS/Windows 3.x, Lock-up/Hang, Retain, Video

Date Created

29-08-96

Last Updated

25-01-99

Revision Date

19-05-99

Brand

IBM PC

Product Family

PC 330, PC 350, PC 730, PC 750

Machine Type

6577, 6587, 6877, 6887

Model

various

TypeModel

Retain Tip (if applicable)

H133775

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