Starting MS-DOS....and nothing happens \ VOGONS

Starting MS-DOS....and nothing happens

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First post, by Cga.8086

Posted on 2017-10-09, 04:00

Cga.8086 Offline

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Im starting to think that my old motherboard pcchips M919 is dead.
I have installed a gotek floppy drive emulator, and flashed a bunch of bootdisks from the well known website
from win95 to win98 and winME, i even loaded MS DOS 6.22 disks on the gotek and no go. (the gotek works because i used it on another pc)

nothing works, after boot sometimes i get
"STARTING MS-DOS..." and nothing happens

sometimes i try other boot disks and i dont even get the starting ms-dos and hangs.

I also tried loading DOS 6.22 on the gotek , with spanish to see if it loaded and also hangs on starting ms-dos
-
then i installed a CF to IDE adapter, with a 256mb cf card that i did a sys c: on a core2duo machine, and used it on the 486 and also hangs on starting-msdos

i have no clue of whats going on, the motherboard is busted?
is "starting MS-DOS" a common problem?

(i used different ide cables and no go)

Reply 1 of 9, by lazibayer

Posted on 2017-10-09, 04:06

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Have you tried booting with a real floppy or IDE drive?

Reply 2 of 9, by Ampera

Posted on 2017-10-09, 04:30

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In line with what lazibayer is saying, it sounds like an issue reading something. Normally busted boards will be weird in other places, this is not something I have seen much before.

Try a real diskette drive and report back.

Reply 3 of 9, by Cga.8086

Posted on 2017-10-09, 04:47

Cga.8086 Offline

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lazibayer wrote:
Have you tried booting with a real floppy or IDE drive?

guess what, dead coast module.

😵 😵 😵 😵 😵 😵 😵

that is what was preventing the pc from booting and hanging on starting ms-dos

are the chips in the coast module replaceable? i have soldering skills, but im not sure if the memory can be found online

it is such a stupid little thing with 9 chips. I hope i can find replacement chips and fix it

Reply 4 of 9, by Cga.8086

Posted on 2017-10-09, 05:02

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forget i asked
a bunch selling AS7C256-15JC on ebay

really pissed off, wasted like 2 hours changing cables and doing boot disks.
and the coast looked fine because when you boot the pc it says cache enabled and staring ms-dos

Reply 5 of 9, by Rawit

Posted on 2017-10-09, 07:41

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Does it work without the Gotek?

YouTube

Reply 6 of 9, by Cga.8086

Posted on 2017-10-09, 11:26

Cga.8086 Offline

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Rawit wrote:
Does it work without the Gotek?

yea i was able to boot dos 6 and format a Hard drive
the isue is the coast module. the chips or maybe one if those smd resistors but i dont know how to detect if those tiny resistors are good or bad

Reply 7 of 9, by Ampera

Posted on 2017-10-09, 11:49

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Depends on how the memory in the COAST module is soldered. In theory you can hand solder right around everything except most BGA (which didn't become a real thing until much later than COAST). Finding the chips would be another thing, and I'm not sure how good your surface mount solder skills, because I would wager that's how the memory is attached to the module. Probably a better idea to just get a new COAST module.

Reply 8 of 9, by Cga.8086

Posted on 2017-10-09, 11:57

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Ampera wrote:
Depends on how the memory in the COAST module is soldered. In theory you can hand solder right around everything except most BGA (which didn't become a real thing until much later than COAST). Finding the chips would be another thing, and I'm not sure how good your surface mount solder skills, because I would wager that's how the memory is attached to the module. Probably a better idea to just get a new COAST module.

actually it is easy. you just need to cut the legs carefully and remove each memory

then buy solderig paste a ceringe and a tiny drop on each contact. then hot air

soldering paste is way better than regular solder for small components

the memory is on ebay. but im not sure id the memory is the issue or the other tiny little components

Reply 9 of 9, by Ampera

Posted on 2017-10-09, 12:41

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I guess you could do that. Just saying it's normally not easy for most of the average Joes around here.

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