Hi, perhaps it is related to APM or ACPI support (or buggy Virge/Voodoo drivers, don't know).
Another version of Windows 95 or a BIOS update might also solve that issue.
If not, you can always give Windows 98SE a try. Or if that's too new, Windows 96. 😉

i have updated the bios recently (which there was only one for allowing hdd up to 64gb) but kept a backup of old bios

thinking trying different drivers for voodoo card or if worst comes to worst, i try doing a fresh install of 95 and wanna keep the pentium pc for dos to win 95 era as i already have a another one for win98 to xp era

can't be the s3 card as never any issues before on 95

but i am also thinking since i have so much in the pc that maybe the psu is powerful enough for everything - so maybe see if a bigger psu for an AT motherboard if possible

think i fixed the problem

my cd-rom drive I used was a 52x one think it needed more power

I swapped it out for a 32x cd-rom drive and no issues so far and been running for few hours now

UPDATE

don't think that worked

it happened again after about half hour of switching on the morning

Robhalfordfan wrote:

think i fixed the problem […]
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think i fixed the problem

my cd-rom drive I used was a 52x one think it needed more power

I swapped it out for a 32x cd-rom drive and no issues so far and been running for few hours now

UPDATE

don't think that worked

it happened again after about half hour of switching on the morning

2nd UPDATE

tried taking out the voodoo 1 card and trying that and still happens but I have noticed for last few days I hear a very fast clicking sound once in a blue moon and now thinking it the hdd that might cause

try to run the seagate tool for dos from a bootable cd and the beeping and black screens happen right away

think i fixed the problem

i replace the pci extractor fan for a lower power one and removed the thermal paste from cpu and heatsink because i when apply the paste to it, the problems happens