Xref: utzoo comp.sys.ibm.pc.hardware:10154 comp.sys.ibm.pc.misc:10749
Path: utzoo!utgpu!cunews!bnrgate!bwdls58!mlord
From: mlord@bwdls58.bnr.ca (Mark Lord)
Newsgroups: comp.sys.ibm.pc.hardware,comp.sys.ibm.pc.misc
Subject: Re: Losing time-of-day from CMOS!
Message-ID: <7152@bwdls58.bnr.ca>
Date: 25 Jun 91 19:23:34 GMT
References: <1991Jun23.121135.4951@iccgcc.decnet.ab.com>
Sender: mlord@bwdls58.bnr.ca
Reply-To: mlord@bwdls58.bnr.ca (Mark Lord)
Organization: Bell-Northern Research, Ottawa, Canada
Lines: 22

In article <1991Jun23.121135.4951@iccgcc.decnet.ab.com> jaffe@iccgcc.decnet.ab.com writes:
<When my PC, a 10-month old Gateway 386/sx, is shut off it loses the time of day
<retained in the CMOS.  The BIOS catches this and forces entry to the setup
<utility.  After the time is reset, the time updates OK.

On many systems, a bad "power good" signal from the power supply can produce
these symptoms.  There are two solutions/ways-to-verify-this:

	a) swap power supplies with a known-good system, and see what happens
on each system if the problem moves with the supply, then replace it.  Otherwise
there is likely a problem with the system motherboard.
	b) some motherboards include a jumper to cause the real-time clock
to use an on-board "power good" signal instead of that from the supply. If your
system has such a jumper, try moving it to see if the problem goes away.

-- 
MLORD@BNR.CA  Ottawa, Ontario *** Personal views only ***
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