Maybe https://xkcd.com/1180/ is a bit harsh, especially as you just had viruses, but issues like on your screen shot are common symptoms of slightly unreliable RAM or L2 cache. Try slowing down memory and cache access, try disabling caches (for testing purposes only), try running memtest86. Furthermore, check whether the heatsink on your P90 is properly making thermal contact. Overheating CPUs can also cause behaviour like you observed.

I've had that happen when the HDD is to large for the bios and it corrupts. Don't know about your situation since it appears you're using a 500MB drive.

Thanks mkarcher I'll try your suggestions when I'm back home, shagittarius the hard drive is 10GB with 2 partitions at 2GB each but the odd thing about this motherboard is it doest see the second partition it only sees the C drive so no D drive, I've already used memtest86+ from a bootable floppy on the 2 sticks of 8mb (16mb total) and I forgot about it for hours, when I checked it it had done 32 passes with no errors so the ram might be ok but this motherboard gave me freezes at the memory count it found the 16mb and froze there so I reseated the ram and it was fine, to be honest this board might go to the side for a while because from what I remember I put a PCI video card in and it wouldn't boot I got an beep error code until I used a different video card but now the former video card is working in it.

What kind of machine is this? What kind of drives SCSI, IDE? , This could easily be a problem with HDD size, depending on the age of the machine and type of interface in question.

Socket 5 is OG pentium right? IDe has limits typical in that bios of 8 or 32GB, if SCSI it likely also has an 8GB limit. It depends on your bios. I think this might be your problem. Unless you are running an external bios or overlay program already...

It doesn't matter how you partition a drive that's too large...

The hard drive is an IDE 10GB but I've only made two partitions for C and D they are 2GB each I don't know what machine this came out of but the motherboard is an Asus PCI/I-P54SP4 rev 1.4 socket 5 with an original Pentium 90 MHz, the motherboard has 512k cache but I haven't changed the jumper settings for the cache since I got this motherboard as I don't know how to tell by looking at the cache chips if it has 512 or 256 etc, in the bios I have set the Seagate U10 model ST310212A (10.2GB) primary IDE hard drive to a user setting of CHS "16383/16/63" and either "normal" or "large" works but "LBA" doses not it freezes at the memory count so I set it to large.

At the top of the post screen for the bios is: "Award modular bios v4.50G, an energy star ally, copyright (c) 1984-94, award software Inc., #401A0-0104".
In the bios at the top of the screen is: "Rom PCI/ISA bios (PI-54SP4), cmos setup utility, award software Inc."
On the bios chip in the motherboard is: "Award software Inc (C) 1994, all rights reserved, ISA/PCI 586, S/N: 016261646 V_______"

Is there a way to test the cache chips on the motherboard I've got memtest86+ on a bootable floppy but I've never seen a way to select the cache, also a strange thing in the Aida16 program to see what hardware is in it, under the memory heading it reports 256MB not 16MB but at post it says 16MB and using the "mem" command reports 16MB too

GabrielKnight123 wrote on 2023-03-28, 11:52:

I used fprot to clean two virus's on my dos 6.21 hard drive boot sector and it's clean now but tonight I hooked this hdd to another socket 5 motherboard and I did a dir command and tried to start wolfenstein but it says wolf.bat isn't there, I did a "type wolf.bat" and it says it isn't there and then I did just a dir command and it says nothing is on my C drive. I did a reboot and now it's fine but this will happen now and then, do socket 5's with a SiS chipset using a pentium 90mhz have gremlins or could this be another virus?
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I think it could be a corrupted file system system like lost clusters perhaps.. try running scandisk on it