🚀 go-pugleaf

MannyR (ereyes@openix.com) wrote:
: I helped a friend install a CD-ROM and new hard drive to his 486 VESA 
: local bus computer. We had to take out the 5.25 floppy drive to have 
: drive. When I powered on the computer, only the fan worked. I cannot 
: hear the cpu start or the booting. It seems that there is no power being 
: delivered to the motherboard.
: 
: Manny

My first suggestion, read THE DEAD PC on my Web Page.  

Second, by no power, do you mean that the POWER LED does not light?  
Maybe you just knocked the power connector loose on the motherboard.  
Make sure the RAM and all the cards are seated properly.  (All this with 
power off and you grounded, off course!)

If this does not help, disconnect ALL drives and reconnect the 5.25" as 
the A drive.  If the system boots normally, at least you've eliminated 
the the MB, RAM, VIDEO CARD, POWER SUPPLY as sources of trouble.

BTW, as far as I know, NO floppy drives made in the lst 3 years need 
jumpers to be set.  Everything is done in your system SETUP.  If you come 
across a drive that does has jumpers, don't fiddle with it, just replace it!
****************************************************************************
Anthony Olszewski 

                            COMPUTERCRAFT!
                      for PC repair information
Articles include THE DEAD PC, ASSEMBLING A PC, THE 160 SERIES PS2 ERROR CODES
    A HUGE and GROWING list of PC and PS2 ERROR CODES is also available!
Links to the IBM, MCAFEE, and many other hardware and software support Sites
                  Download a NOVELL CNE Tutorial Program
Jump to the Home Page of Doctor Diakun, MAC meister, PGP whiz,and HTML maven!
                   <URL:http://www.mordor.com/aolsz/>
*****************************************************************************

ereyes@openix.com (MannyR) wrote:

>I helped a friend install a CD-ROM and new hard drive to his 486 VESA 
>local bus computer. We had to take out the 5.25 floppy drive to have 
>space for the new hard drive. Installing the new peripherals was not a 
>problem. The problem was when we took out the 5.25 floppy drive, the 
>computer will not boot because the 3.5 floppy drive was the b: drive 
>originally. We changed the cmos settings and put on the power on 
>defaults. Then I tried to tinker with the jumpers in the 3.5 floppy 
>drive. I place the jumper to MD setting - figuring that that was Master 
>drive. When I powered on the computer, only the fan worked. I cannot 
>hear the cpu start or the booting. It seems that there is no power being 
>delivered to the motherboard.
>I appreciate any help.
>Thanks and regards.

>Manny
There's a little pulse called a "power good signal" that the mother
board returns to the power supply before it can deliver regulated
power to the board.

If you can't get the signal, you've done something wrong... Like
setting jumpers on a floppy drive to a conflicting setting and/or
connecting the data cable with pins 1,2 on the wrong end of the pin
bank.

Maybe you've connected the CD ROM backwards too. With some brands of
drives this guarantees a burnout. I'd say at this point you have no
alternative but to seek help from a technician or at least someone who
has more knowledge of computers than you do because any further
fiddling could trash you "mate's" computer.



Doug Smith B.SC.
Editor of Qld Computer Trade News

In article <4jqa1e$stf@spasmolytic.openix.com>, ereyes@openix.com (MannyR)
wrote:

> I helped a friend install a CD-ROM and new hard drive to his 486 VESA 
> local bus computer. We had to take out the 5.25 floppy drive to have 
> space for the new hard drive. Installing the new peripherals was not a 
> problem. The problem was when we took out the 5.25 floppy drive, the 
> computer will not boot because the 3.5 floppy drive was the b: drive 
> originally.

Firstly return any changes to their original settings ie. jumpers.  to
make the 3.5" your a: drive the connection on the ribbon cable which was
originally for the 5.25" should be used and I don't mean the actual plug. 

After that is done it is important to check that the HDD ribbon cable is
connected properly to both HDD and HDD controller.
Finally check that your sound card or whatever you are using to connect
the cd-rom is not conflicting with any other cards.

Hope that Helps
Al.