Error Reinstalling Windows 3.11

Getting error reinstalling existing Windows 3.11.  Tried reinstalling twice.  No past problems when had to reinstall.  PC is a 486-33, 1.2 GB HD with Norton Anti-Virus active and MS Office 4.3.

Application Error:  WINSETUP caused a General Protection Fault in module GDI.EXE at 0001:31F9

Application Error:  WINSETUP caused a General Protection Fault in module USER.EXE at 0001:40B6

Standard Mode: Bad Fault in MS-DOS Extender
Fault: 000D  Stack Dump: 0000 0000 0070
Raw Fault Frame:  EC=0000 IP=5EF7 CS=0367 FL=3087 SP=FFEE SS=02C7
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MATTCEIConnect With a Mentor Commented:
Try ending (CTL - ESC) all but Program Manager before starting Setup,or exit to DOS and run Setup.A conflicting auto-start program (especially any anti-virus software) can cause this.

If this doesn't help,you may have a hardware problem.Let me know.
DrRichardAuthor Commented:
Booting from a DOS diskette worked and was able to fully reinstalled Windows 3.11 but then PC started freezing at point of started MS-DOS.  I believe it is a RAM memory problem.  Will be changing PC's.
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