First post, by RBretrox
A Socket 370 motherboard forms the base of my Windows 98 project PC, but its got a problem that I can't find an answer to and I've tried everything I can think of/
Motherboard is a QDI Advance 9 Motherboard (Award BIOS), with ISA/PCI/AGP slots and USB ports - so its a very useful board for this type of project. Pentium III 800 CPU.
When I start the machine it does the normal POST Beep, then starts a continuous string of fast repeating beeps from the internal PC speaker. Windows will boot ok.
In the BIOS it reacts very slowly to keypresses, like a few seconds delay to each, the beeping continues. Sometimes the beeping is broken up, like a floppy disk access pattern sound (its not disk access). This is most often like a fast string of short "ticks" but also the normal high pitched beep at the same time.
It sounds like a stuck keypress, but it happens with any keyboard, even without one attached.
Also PS/2 ports are not working. USB keyboard works.
Things I've tried:
- Different PS/2 keyboards and mice
- Unplugging everything except RAM and CPU
- Different RAM, Video Card, PSU
- Updated BIOS successfully
- Desoldered the PS/2 ports (in case it was a short on that)
- Tested two small fuses on the board (continuity good)
- Tried different HDDs
- Checked for bottom of board shorts on the case
- Checked voltages and temperatures in the BIOS - all ok
Can anyone suggest a cause and possible solution to this?
Thanks in advance!