AMD k5 can't Boot in different pc

I'm trying to put a AMD k5 Pr166 in a packard bell multimedia c115
pc and so far i can't boot up it just does nothing.
the mb is a pb680, chipset 82437vx pci. mb supports processors up to 200mhz and some (overdrive) processors.
I have 3 buss speeds 50, 60, 66 mhz cpu multiplier goes to 3x
tried all combos of speeds nothing boots.
i've also had the rtc battery out for awhile then put it back.
the packard bell was working good on the intel 120mhz P54C processor, had it running 133mhz for serveral months never could get it to boot higher than 133mhz. (socket 7 processor)
I am running the intel pr120 in the acer pc that I took the amd K5
from, It runs Good at 133mhz no problems at all with it.
Also the K5 works good in the acer pc, but can't boot it in the packard bell.
The bios that is running the amd k5 is an acer BIOSVersion: P55C 233 V2.1 08/13/97
I also updated the bios for the pb680 mb on the packard bell to the latest version, release date in 1998
also tried both power settings on the mb.


Does anyone have any ideas that might help??
Thank you.


Roger:

 

Found the problem

The motherboard on the Packard bell doesn't support the correct voltage for the AMD k5 processor which runs at 3.52 volts.

The Packard bell has a 120mhz intel processor that runs at 4.6 volts and the vre voltage setting is also 4.6 volts.

So i guess i have my answer.

Thanks:

Roger

 

You may be able to change a jumper on the motherboard to change the voltage. I had a pent 166Mhz that I changed the CPU out for a pent 166Mhz MMX and had to change the jumpers for the voltage, it depends on the motherboard & what it will support.

Bubba169

 

The motherboard has two voltage settings for the CPU.
Both of them are 4.6volts with a little variation in the amperage
The amdk5 runs at 3.52 volts. It's a hot chip has a fan mounted on the heatsink.

The first setting is for a intel standard or (overdrive ) CPU
The second is for a D VRE CPU.
I went to a page that had the specs on the voltage for those CPU's They run at 4.6 volts.

Thanks:

Roger

 

Oh Well it was worth a shot I guess, but I will make note of this if I ever run into it. I guess the other board is more "flexible" then what the 120Mhz board is.

Bubba169

 

Thanks Bubba for your Intrest, I've decided to give up on it because i can't figure out a way to do it.
The amdk5 pr166 can't run past about 3.62 volts, or maybe a little higher.
but 4.6 volts would be way too much.
Acer claims they are intel compatable, but evidently not the same voltage.
The amdk5 pr166 has an internal mulitplier that reads a board setting of 2.5x as 1.75x so that is the reason the processor speed actually runs at 116.5 mhz. I'm running it at 200mhz and that returns an actual processor speed of 133mhz.
but it is supposed to be equal in processing power to a 200mhz
processor. something about the way the pipeline is desined
makes it acomplish just as much at a slower mhz.

Thanks:

Roger

 

The computer I'm on right now was a pent 166Mhz non-MMX, 16Mb ram, 1Mb video, 32x CD-Rom, 402Mb hard drive, 3c905tx NIC. I bought 3 complete computers that day 2 were the same as above & 1 was a pent. 100Mhz, got all 3 for a little less then $45 (US) at an aution. To make along story short I traded my brother in law the Pent. 100Mhz, used 1 166Mhz for Linux until the power supply crapped out and killed the floppy, harddrive, ram so I used the motherboard (believe it or not it survived) in a pent 166 MMX unit with a bad Motherboard, later sold that computer. Now the one that I'm now I upgraded the cpu to an AMD K6-2 @400Mhz from Evergreen Tech. http://www.evertech.com/ added a 3.2 gig hard drive, and a sound blaster ISA sound card from here http://www.used-pcs.com/home.htm and 64 Mb of ram from crucial http://www.crucial.com/ kept the video card and NIC bought a cheap $25.00 US Robotics Software Modem (56k), and a serial wheel mouse. This one has been running for over a year now and I've got money's worth out of it. It's kinda fun playing with the old computers, I also have an enhanced 386 running Windows 3.1.

Bubba169

 

The packard bell multimedia C115 was given to me by a person at work, she took it to the pc shop and they said it couldnt be fixed.
so she bought her another pc.
all that was wrong with it was some pennys in the floppy drive.
and a loose cable connection on the cd rom.
i asked if she wanted it back and she said no.
so i put a hd (6.2 gig) that i took out of a Imac and upped the memory from 16mb to 48mb and turned the pprocessor up from 120mhz to 133 just changed the buss speed from 60 to 66mhz
and i have a dsl connection to the internet it runs pretty good.
can't complain since all i put in it i already had so ive got zero
money invested in it.
The acer aspire pr166 i bought new in 1997 it does pretty good
with 80 megs ram and a 8.4 weatern digital hd turned it up to 200 mhz a couple years ago although the actual mhz is 133
it performs better than a 133.
i have 3 computers networked at home and on ICS win98se.
and sometimes 4 the compaq 486dx2 win98se on it too.
but having video adaptor trouble and havn't really tried to find the problem yet.
also have a hp 8693c 533mhz intel 256meg memory as the ICS server trying to do some remodle on my house and don't have much time for pc's right now.

Roger

 

I bulit an AMD XP 1800, 256 Mb DDR, 60 gig HD (It's a triple boot Win98SE, Redhat Linux 7.2, Mandrake Linux 8.2) other than CD burning and learning Linux I use my old 400Mhz box Seems some people have to have to latest & greatest in PC's but these old boxes will still do the job fine just a little slower. I recently just overhauled a pent 166Mhz (Intel must have made alot of these) for a local company, I returned the box it worked perfect for a 166Mhz with Win98, about a week later I was talking to one of the company's managers and I was told that after the first of the year they were going to buy all new computers and a server. I put my name in the pot for the old ones don't know if I'll get them or not. I'm all for hand-me-downs don't spend alot in them & if they die then your not out much, also they're good to learn on.

Bubba169