New PSU in emachine, only emachine logo displays 2

[scallosa]

I have an emachine 366 running win98. I replaced the Illsan Elecome ISP 120s (eing 200-240vac)power supply with a replacement, 200watts same size: 3 7/8 x 2.5 x 5".
I made sure to connect the same wires to the mobo as before: 1 mobo connector, 1 to the floppy, 1 to the hd, and a shunt to the cpu fan, which btw is operating.
Now when turned on, it displays only the emachine logo.
Same when booting with a floppy boot disk.
I hear no beep when it boots up.
Is there something else that has to be done when installing a new power supply?
Thanks.

 

[MainePC]

Is there power going to a CD drive? If there is an IDE cable going to the mobo, but the drive has no power, that could be confusing the boot process.

 

[scallosa]

The CD has a power hookup and IDE connectivity.
The mobo is a TriGem Dehli3 1.00, BIOS American Megatrends 0631 4/26/99.
The new PSU is an Allied model AL-B200SFX, max 200w, cmbined power 70/170 (?). The old one was 120 watts.
Also, the HD lite stays lit, and I have to push the power switch on the front of the machine to turn it on, but the same switch will not shut the PC down.

Thanks,
Vic

 

[micker377]

Now when turned on, it displays only the emachine logo.
Same when booting with a floppy boot disk."

Same WHAT when booting from a floppy? Sounds like the hard drive is not being recognized. Can you access the BIOS setup?

 

[volcano69]

Why did you replace the power supply? Was the old one faulty? Is it possible that the old power supply damaged some components?

 

[felixc]

It displays the emachines logo, so it means that the BIOS is alive and it sends something to the monitor. Do the keyboard lights turn on and off? Are you able to reach the BIOS menu?
Disconnect your peripherals, check if the system boots, and reinstall them one by one.

 

[scallosa]

mickr - cannot access the bios, keyboard has no effect.
Same results (which is nothing) when booting from floppy as when booting from hd.

felixc- No keyboard activity. I will try your suggestion.
Thanks

 

[micker377]

Same result with floppy"

Would be the same if you can't access the setup screen and change the boot order. Is it possible to put this hard drive in another computer? This would eliminate the drive as the problem. Some E-Machines, as part of the BIOS setup, has "Stop on any errors". If there is a hard drive problem, it could be freezing the boot process. Is the IDE cable to the hard drive up-side down? The stripe should be next to the power plug. Also, unplug all the drives. You should get a "No operating system found" error. If you don't get this error (with everything unplugged), it goes back to memory (reseat), CPU, or BIOS chip (felixc - the BIOS can be alive, but not well).

 

[scallosa]

The hard drive was in another computer and is fine.
IDE cable has red stripe facing power plug.
So to get one more thing out of the way:
There is nothing that has to done to the mobo when changing power supplies, correct?

 

[micker377]

<There is nothing that has to done to the mobo when changing power supplies, correct?>

Correct. I plug power supplies in for test all the time. Can you pull this new power supply and plug into a known working computer? Just make sure the "test" computer has minimum drives plugged in as to not "overload" the 200 watt supply.