>>>> Energized UPS. Turned on PC. Dual channel notification noted in
>>>> use by bios. No hard drives, or DVD burner noted. Cannot find
>>>> anything to boot from. Reset PC reboot switch, same as above.
>>>> Deenergized UPS, immediately energized UPS. Same as above.
>>>> Deenergized UPS. Left off for just over a minute. Energized UPS,
>>>> turned on PC. Bios senses and notes hard drives and DVD burner.
>>>> Onboard ide not detected by bios: Primary master (80 GB WDC),
>>>> primary slave (200GB WDC), secondary master (LS120 version 5),
>>>> secondary slave (TDK DVD +4X burner). Detected in all cases:
>>>> connected to Promise ide card - WDC 45GB, Fujitsu 17GB, connected
>>>> to Adaptec 2930B scsi card, Seagate 4GB, IBM 9.1GB, Plextor 32TS
>>>> cdrom. All seems to be working okay now. Is something imminent to
>>> By "de-energize" UPS, do you mean that the computer is being
>>> connected directly to the main power? If this is the case, then the
>>> problem may be located in one of 2 possible areas --- the UPS
>>> battery has gotten bad and is no longer holding a full charge or the
>>> PSU is starting to show signs of going bad. But there are many
>>> connections using the PSU. Before proceeding any further with an
>>> analysis, just what is the rating of the PSU in Watts and the rating
>>> of the UPS in Watts?
>> UPS has an on/off switch for the switched outlets which the PC runs
>> off one of these outlets. The PC will never run with this switch in
>> the off position. No power is present at such an outlet during that
>> occasion. Battery power has no influence in that situation.
>> Power supply is 450 watts.
>> Don't know the wattage rating of the UPS. Has worked for some years
>> now on both this PC and those I built prior to that with similar power
> If you have been using the UPS for years and not changed the battery then
> it probably needs changing. I don't know if this would cause your problem.
> To test if this is the cause take the UPS out of the equation and connect
> all the equipment directly to the AC. It sounds more like a PSU or
> motherboard problem. You have a lot installed in that pc. 450 watts may be
> marginal. Many PSUs do not operate reliably when stressed to near their
> maximum rating.
> MS-MVP Windows - Shell/User
Found that if I turn on the UPS with the on/off switch, and wait about 30
seconds, there's no problems. Though, I didn't see that problem this
morning when I went throught turn on UPS, then PC routine without waiting.
Will see if things change with PC plugged directly into a wall outlet. The
UPS is an old PK blackout buster model. Company is out of business, think I
can still find a battery though.