Problem with 'new' CPU (AMD K6-266)

[Sean Fox]

I'm really hoping I might be able to pick your collective brains here!

So my new processor arrived today, an AMD K6-266 AFR (regular Socket 7)

However after installing it, all I'm getting is a black screen and "no signal" on the monitor. Swapping the old CPU back works perfectly, so I'm not sure what the problem could be. The seller assured me he had tested the CPU before shipping and it was perfect.

There are no real markings on my motherboard to identify it, other than a few numbers -

It says E139761 along the top edge, and a white socket with: 3M1X2YY 9709. A Google search didn't turn up much meaningful info.

It's a Gateway 2000 system with an AMIBIOS version of 1.00.07.DQ0T UAV

Could it be that the motherboard/BIOS is not compatible with AMD chips? The working processor that I removed was a Pentium 200MMX, and as I say this works fine if I swap it back in.

Any advice you can throw my way would be really appreciated!

 

[Sean Fox]

Are there jumpers on the motherboard for CPU multiplier and BUS speed? Possibly core voltage also?

Oooh that's a good question, I haven't checked - mind you, I've no idea how they should be set if there are!!

I'll take a look

 

[Sean Fox]

100% the jumper settings will need to be changed. Is there no guides on the motherboard itself?

Nothing that makes any sense to me - I took a few gut shots this evening - as you can see, there aren't many jumpers, and the ones that are there aren't really labelled

Pics here: http://imgur.com/a/awpcOfx

 

[Sean Fox]

On the last screenshot you can see at the top left there is a box with "bus freq" and a list of variations.

You will need to set the bu freq to 66 and multi to 4x.

Although looking at that it only goes to 3x so its possible you cannot run that cpu at 266 on there.

Damn! I completely missed that!! Thanks for the advice! Am I likely to damage anything if I can only set the multiplier to 3x?

Something's telling me a newer motherboard might just be the best way forward...


Edit - thinking about it, there's no point me running it at 66 with a 3x multiplier anyway since my working CPU is already 200mhz. I guess I'm kinda stuck!

 

[Sean Fox]

Dude this thing is older than many of my students, i wouldnt be wasting my time trying to get it to work now let alone find another main board for it.

I see what you're saying, but this really isn't a waste of time for me - there are a whole bunch of games that simply don't function well on modern hardware which is why I'm keen on maintaining an old system.

 

[Sean Fox]

Agree with the above, there will be jumpers for voltage although from the photo it doesn't give a table so would have been on a manual or a sticker inside the original case instead to show the settings needed.

No stickers inside, and none of the jumpers are labelled as being for voltage unfortunately Annoyingly, I haven't been able to track down a manual for this motherboard.

 

[Sean Fox]

Have you got a high-resolution image of the whole board (remove all add-in cards, so as to get a good view)?

Might be easier to identify from a non compressed full image.

I don't currently, but I'll try and grab a decent full image with everything removed tonight Thanks @paradigm !

 

[Sean Fox]

I took as many pics as I could this evening, it's a bit of a squeeze in there, but I managed to capture everything - http://imgur.com/a/20X6Oxf

 

[Sean Fox]

Lools like an Intel LT430TX board which was used in a lot of PCs in that era, including Dell I believe.

You're a star - that's really handy to know, thank you!!

Also @Sean Fox as per your other thread, is the memory you are trying to upgrade to SDRAM? Because the board is designed for EDO.

Edit: See this link: http://www.uncreativelabs.de/th99/m/I-L/34285.htm

Aaaah....crap...yes! /facepalm
Oh well thanks for the info!! At least now I can get the right stuff!