Hardware issues with an old ASUS P5A system

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Hardware issues with an old ASUS P5A system

Postby nathanieltolbert » 2017-5-20 @ 03:52

I don't know if this is in the correct location but if it isn't please let me know so I can ask to have it moved to the proper location. I last year purchased an old ASUS P5A motherboard. The seller said it was a rev 1.04 board, but when I received it the board is actually a 1.05 or 1.06 (I apologize, I cannot remember exactly right at the moment.) which threw my plans into a tizzy as I had purchased an AMD K6-III+ 450MHz. I tried it even though everyone said it wouldn't work right. The system performance ran at roughly 1/3 of the performance for the processor. So I purchased a K6-2/533 after failing to find a standard K6-III 450MHz for a price I could afford. So the current system layout is as follows:

AMD K6-2/533MHz running at 522MHz on a 95MHz FSB on ASUS P5A Rev 1.05 or 1.06(?)
2 x 128 MB PC-100 3-2-2 RAM DIMMs
20 GB IDE ultraATA100 Western DIgital (otherwise known affectionately as the clogged vacuum cleaner.)
Radeon 8000 64MB with VGA and DVI output
Sound Blaster Audigy
Windows 98 Second Edition

However I am running into an issue and I was hoping someone else here might have encountered this issue. The system has 2 128MB PC-100 SDRAM DIMMS. The BIOS is I believe 1011 or similar. It is a beta bio I believe. I cannot get the k6-2 to run at 533, I cannot get the motherboard to recognize the 97MHz FSB, but it works at the 95MHz FSB resulting in a CPU speed of 522MHz. But the issue I have is this. I have windows 98 installed. I wanted to install Windows 95, but I encountered the issue with CPU speed, which I overcame with the patch from AMD, but then I couldn't install the sound card. The Audigy driver disc I have saiys it doesn't support Windows 95 and I haven't look to see if there were W95 drivers anywhere else. I'm using the ALI Aladdin IV drivers that came with the motherboard because the only other driver version I found always resulted in the system failing to boot. So I have been fighting issue after issue, but this new one has me stumped. The system is stable. I can run benchmarks, I can run all of the system tools that I use, scandisk, defragment and so on. Running a thorough scan with scandisk indicates no issues with the hard drive at all. But the instant I try to utilize anything that accesses sound, be it a video, game, or audio editing software the system hard locks after 1-5 minutes. The lock up time is random, but the lock up is consistent. This sound card worked fine in the last system I used it in, but that was a Pentium III 866MHz running WIndows 98. Has anyone else run into this issue? Is this the chipset drivers causing issues, or the ALi GART driver, or is the soundcard incompatible with the motherboard? If anyone has any suggestions on how to test, please let me know and I will try it. Thank you


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Re: Hardware issues with an old ASUS P5A system

Postby meljor » 2017-5-21 @ 13:45

First: Ali Aladdin 5 can get slower with more than 128mb ram since most boards cannot cache more than that. HOWEVER, the 1.05 and 1.06 have the later revision chipset (that gives problems with the ''+'' cpu's) and should be able to cache more ram. Never checked that so i would do that if i were you.

I would try and run the cpu at 3x100, just to make sure the board and ram can handle that 100mhz fsb. If that is absolutely stable try 400 and 500mhz. Maybe 533 is too high now for that particular cpu, maybe it need a tiny voltage bump/better cooling or both?

Also, these super 7 boards can be a little problematic with certain agp cards. To me, radeon's seem to be harder to get stable on these setups. Try and run an Nvidia card, i run a geforce2 gts in my p5a without issues, while a geforce2 Ti of the same brand gives problems... Lowering the sagp settings in bios might also help.

If you think the sound card is the problem, try running the same software without the card and see how it goes. Just to make sure that's where the problem is (i think it's the agp card).
Also try and download different drivers for sound, agp and videocard. It might make a difference.

For ali agp driver i strongly prefer the 1.72 driver, 1.82 also works well.
asus tx97-e, 233mmx, voodoo1, s3 virge ,sb16
asus p5a, k6-3+ @ 550mhz, voodoo2 12mb sli, gf2 gts, awe32
asus p3b-f, p3-700, voodoo3 3500TV agp, awe64
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asus a7n8x DL, barton cpu, 6800ultra, Voodoo3 pci, audigy1
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