MSI PM8M-V 7104 won' post after cpu upgrade

[sedlik]

hi everybody,
new to this board and new to this concept of recapping.
anyway, I got this motherboard used,It came with a P4 1.8 cpu @400MHz and it works great everything seems fine,but when I upgrade to a 2.8 cpu @ 800 MHz it won't post.I've tried everything I can think of.even bought a new 600 watt PSU.there are a row of 5 caps along the cpu, 3 are the KZG 3,300uf 6.3v that I've been reading about on this board, one has a little bulg.that's why I think it's somethink electrical.any thoughts or ideals would be welcome because I would like to get it fixed and I'm not interested in doing it myself.

thanks

[stj]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

2 things,
1: are you sure the board supports that cpu / frontend clockspeed?
going from 400 to 800 sounds a bit much.

2: have you got the latest bios?
i had issues with upgrading athlon's because the bios was older than the cpu i wanted to use.
answer was to refit the older cpu, flash the bios, then put the new one back.

[sedlik]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

yes to both of those

[sedlik]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

the one on the left is the suspected cap (KZG)

[sedlik]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

error uploading photo will try to resize and try again

[sedlik]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

this is it

[stj]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

that's bad i think - i'd change the set together.

[kaniki]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

that's bad i think - i'd change the set together.

I dont exactly see where you say that it is bad. Yes the cap is at an angle, but the caps are not flush against the board so it would be very easy to slightly bend it out of the row angle with the others.

as for replacing them, just knowing that they are KZG's I would replace them. also, did you try resetting the bios. maybe trying a hard reboot of the bios will work (removing battery, jumper reset, etc)

[stj]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

it actually looks like the bung may be coming out of the base.

[kaniki]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

you are right. i missed that. it is kinda hard to see with a small picture..

[sedlik]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

is this better?

[kaniki]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

from those it actually looks like all 3 are starting to blow from the bottom..

also, from those pic's i noticed one other thing too.. I would take a good check over that board. I don't know if you noticed or not but that board is warped. It bows down right where the CPU is. last time i checked, motherboards were flat, not bowed.

[seanc]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

It's probably bowing because of the heatsink. I see it on brand new LGA775 boards all of the time.

[shadow]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

Agree with seanc here. It can also be observed with the older Pentium 4 motherboards...Socket 478. It did seem weird that even a stock heatsink would bow the motherboard until I found out that it was done intentionally.

[sedlik]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

so in your opinion do you thing this might be my problem? why it only boots with one type of processor? I'm thinking it might be a voltage problem because this cpu takes 1.75v and the other ones run on low voltage.I did get it to boot once but it only registered as a 2.3 GHz (it's a 2.8) but when I turned it off it never booted again.I want to get this fix but I don't get any response from these websites that offer to fix it when I fill out my info.

[seanc]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

The failed capacitors cannot handle the extra requirements of the new processor compared to the older one. The fact that it works at all is a bonus, at least you know you're not fighting a lost cause.

You need to replace those capacitors, then it should be fine.

[sedlik]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

going to attempt to change the caps, got a VIA P4PB 400 to practice on,got about 7 bulged caps (GSC) it's doing the samething as this MSI board is doing.

[sedlik]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

going to attempt to change the caps, got a VIA P4PB 400 to practice on,got about 7 bulged caps (GSC) it's doing the samething as this MSI board is doing.I'll update later

[seanc]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

Good luck. Once you get the hang of it, it's easy.

[PCBONEZ]

Re: MSI PM8M-V 7104 won' post after cpu upgrade

Bloating is only one of several failure modes.

Chemicon KZG are known high failure rate parts and they often fail without any bloating at all.

Chemicon KZJ are suspected of having the same problem but they aren't common enough to make the call. Most companies that want ESR as low as KZJ use polymer caps instead.

OST [any series] also frequently fail with no bloating on motherboards.
.