Alabamarebel1861
Experienced Member
- Joined
- Jul 12, 2020
- Messages
- 123
At the top of the photo, I can make out, 'Real time clock error'. Any other errors not in the photo?
The Internet indicates that the P4D-66's motherboard has a Dallas RTC module, one that contains a battery. The web page at [here] suggests that if the RTC module's battery is discharged enough, a battery error is displayed. Seeing a battery error?
You could find a replacement Dallas RTC but many have been sitting in warehouses for a long time leading to having mostly discharged batteries. Check which model is on the motherboard. The supplier I would often buy such from indicates it should cost about $10.
The other option is to carefully cut open the plastic shell and solder a new battery to replace the failed one. An example of how to do it is at https://classic-computers.org.nz/blog/2009-10-10-renovating-a-dallas-battery-chip.htm
A lot of people think, "If the CMOS battery is dead, all that means is the CMOS SETUP (and clock) information will be lost when I turn off the computer. So if I keep the computer powered on, I should be able to setup/configure the CMOS SETUP and get the computer going."However none of this explains how to get it to detect a HDD
A lot of people think, "If the CMOS battery is dead, all that means is the CMOS SETUP (and clock) information will be lost when I turn off the computer. So if I keep the computer powered on, I should be able to setup/configure the CMOS SETUP and get the computer going."
For some motherboards, that is not the case. One example (of a few) is at [here]. It is possible that you may need to replace the Dallas module (or replace its battery) before you can proceed further.
Taken in isolation, no, but we have seen some pretty weird stuff over the years. Factor in other symptoms such as "It won't hold the time for even a restart." and a 'Real time clock error' message being displayed, fingers start pointing at the Dallas RTC/CMOS module (and supporting circuitry).I've noticed that the IDE controller defaults to off. When I try to turn it on and restart it turns itself off again. This is even the case when all other modified settings were successfully saved. Does that still sound like a dead battery case?
Hello - I have a similar computer, just wondering how the troubleshooting process went for you on this machine. Hopefully you got it working!View attachment 1067637
So I just today got my hands on this lovely 486 based gateway desktop PC. I'm having 2 major problems. It's having these two IRQ errors (as pictured) as well as I am unable to get a hard drive to work with the system. Any help would be appreciated