Re: After power failure, some problems...
- From: Paul <nospam@xxxxxxxxxx>
- Date: Sat, 07 Nov 2009 22:11:23 -0500
JD wrote:
When I noticed that my system clock had been reset to Jan. 1, 2002, I corrected it manually, and that allowed my A-V "license" to be validated.
However, to my surprise, I had to reinstall the audio drivers from the CD.
But My Computer now shows the presence of a floppy drive (A). This machine has never had a floppy drive. Hardware Manager shows both a floppy drive and floppy disk controller installed and "working properly."
Should I use the Hardware Manager to "remove" the floppy drive--and floppy disk controllers?
Or just leave well enough alone. Everything else seems to be working OK now.
1) Verify the CMOS battery is still working. Usually that
is a CR2032 in a socket. Check with a multimeter, that it
measures 3.0V or a bit more. You can pick up a ground, on
any shiny metal or an I/O screw on the back I/O plate.
You don't have to pull the battery to measure it.
If the battery reads below 2.4V, that is not sufficient
to power the CMOS RAM when the ATX power supply is switched
off at the back or unplugged (or power failure).
Your power fail symptoms tell me the battery is flat,
but you can verify with the multimeter before tearing
anything apart.
2) For the floppy, try a load setup defaults in the BIOS,
save and exit.
My guess would be, the SuperI/O chip has a floppy interface,
and normally the BIOS would be setting a bit in the chip
after power up, to make it look like no floppy is present.
On modern systems, they may continue to use legacy rich
chips. Then, to make it look like most of that is
missing, they disable the devices in the SuperI/O during
POST. A SuperI/O might have eight legacy devices, and
it is likely each one has an enable/disable, to suit
situations where connectors have not been connected
to the interfaces in question. So the fact that yours
has become visible, might be corrected by a power cycle and
POST sequence. Or by a load setup defaults.
I think I would fix the CMOS battery first, before
working on the floppy issue.
Paul
.
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