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PC won't boot up

By pmaro ·
I have a 486/66 clone that I was cleaning up for a relative. In the past (probably several months) it had booted up fine. I turned it on today and walked away and it sounded like the hard drive was struggling to start up. I came back over turned it off and it seemed to come up OK to the AMIBIOS system config box and the following showed on the screen
256KB CACHE MEMORY
66MHz CPU CLOCK
384k SHADOW RAM
_
It hangs up after the 384k SHADOW RAM line. The floppy drive light is lit at this point also. I have tried booting to floppy, reseating the 8MB RAM chip, also tried another slot. I also tried swapping out the hard drive to no avail. Any ideas?

Phil

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PC won't boot up

by bbennett In reply to PC won't boot up

I had an old Dell 486/66 that I rarely used. After several months sitting it wouldn't boot up either. A friend suggested I change the cmos batteries, and viola - problem solved.

This may not be a cure your ailment, but it sure resolved mine.Hope this helps!
Belinda

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PC won't boot up

by pmaro In reply to PC won't boot up

I checked CMOS all settings OK. Thanks Belinda!

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PC won't boot up

by spiceman In reply to PC won't boot up

if the cmos battery has gone than your machine does not know its hardware configuration - so you need to go into BIOS and check the hard disk, floppy etc are correct. Then until the battery is replaced keep your machine on or the settings will be lost.

Try receding all the hardware, the cables for floppy and hd. You should see the memory count or check being ok. The computer should boot from boot disk (ensure it is a boot disk that works on another computer). If you cannot boot from floppy than you need to check the cable and settings for floppy.

Good luck

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PC won't boot up

by pmaro In reply to PC won't boot up

All this seems Ok. Thanks!

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PC won't boot up

by Espet In reply to PC won't boot up

Ive had a few 486's and Pentium 75's do this to me. Usually it is either the cmos battery as mentioned above, or it is the power supply itself. Check to see if the fan is still working on your power supply. If not, then replace the power supply.

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PC won't boot up

by pmaro In reply to PC won't boot up

Power supply OK. Thanks!

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PC won't boot up

by curtis864 In reply to PC won't boot up

Another possible problem is that the hard drive is faulty and is causing the computer to hang. If the CMOS thing didnt work, try disconnecting the hard drive and booting off diskette.

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PC won't boot up

by pmaro In reply to PC won't boot up

Poster rated this answer

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PC won't boot up

by MarcAsk In reply to PC won't boot up

Phil, It sounds like your system board may have bit the dust. Try removing all the perpherals (ie keyboard, mouse, I/O cards, IDE cables, floppy cables, cache modules, ect). All you should have connected is a system board and video adapter. If the problem does not change, remove the video card,connect the floppy cable and watch the light on the floppy drive. If the drive light lights, the problem is your video card. If the problem persists, it is either your P/S, simm module, or motherboard. The P/S can be ruled out 95% by using a meter. That would leave the mobo or the simm. You can try the simm in another machine (if you have that luxury). If I had to buy both the remaining two components, I would go for the memory first as the POST lastdisplay is memory based. Hope this helps

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PC won't boot up

by pmaro In reply to PC won't boot up

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