Problem sort of stumped me

D

danimal

Gawd
Joined
Jun 4, 2002
Messages
844
Ok I am putting together my computer and it doesn't seem to power up at all. I thought it was the board but it isn't because I got it replaced. I tested the PSU on another computer and it works fine. It did power on once but when I shut it down it never did again. I am thinking it might be the case switches and I know i plugged them in right. Maybe the switches are messed up? Let me know if you guys have any ideas.

MSI K8T Master 2
Opteron
EPS PSU
1 gig REGISTERED ram
 
Your best bet is to try a minimum build outside the case.
You just want Mobo, One stick of Memory, One CPU with its heat sink & Fan, Vid card if needed.
You need to have the mobo on a insulated surface so I always use the box it came in.
Plug all the PSU power cables in, KB & Mouse.
Double check the switch on the back of the power supply is on, the heat sink is pluged into thecorrect header, ect, etc.
Switch the power on.
Now just touch the power switch headers on the mobo with a small screw driver.
Building outsice the case means its easier to read the silk screen and get the correct pair of header pins.
If everything is right it will power on.
If not then there is only five parts to check as to why its not working.

Ps: Thats how I always build & test a new comp before putting it in its case and plugging everything else in.
Its a lot easier to trouble shoot why it wont work that way.

Luck............ :D
 
I was planning on pluggin my old computer case into the board and see if it was the switches. But yeah I think I'll give that a try.
 
I had/have this problem with my build (in sig). I had it powered up but it wouldn't go up again although it would be fine if I was just restarting and not powering down. This frustrated the hell out of me. Basically I can get it to start every time now but I have to use a trick. I turn the power supply off, then I hold in the power button on the case, and finally I turn the psu on while holding the front "on" button and it powers right up. I don't know what causes this problem and I'm glad to have a fix that has worked 100% but it's still annoying. I have no clue if this will work for you though as your components seem to be pretty different.
 
Ok so I tried doing a minimal setup. It isn't the case switches because I tried another case and it still did the same thing. It isn't the memory because I tried another working stick and that did nothing either. ALthough the second one wasn't registered but I figured the board should at least power on. I am thinking it is either the PSU or the CPU. I don't got a lot of opterons lying around. So I was thinking maybe the PSU wasn't compatiable. I tried the power switch trick from dissance up there and it didn't work. FOr the longest time I would hold the power button and I would see my heatsink fan go for 1 sec and stop. So power is definitely going through the board. After all this anyone have any other ideas before I get a new PSU?
 
Is your memory also ECC? I believe Socket 940 requires ECC memory.
 
danimal said:
FOr the longest time I would hold the power button and I would see my heatsink fan go for 1 sec and stop. So power is definitely going through the board. After all this anyone have any other ideas before I get a new PSU?
Click to expand...

Sorry to hear that. That's what mine did before I read about that trick. I'd get the fans going and the LED's lighting for 1 sec. Anyone else have any suggestions?
 
Is the other computer you tested the powersupply on an XP processor or A64?
 
it was an Athlon XP. But this PSU is an SSI one so it was meant for server boards. Not sure if it was meant for Opterons but it said AMD/P4 procs
 
I, and others have encountered problems with older PSU's not booting new A64 systems correctly, even if they are rated high enough. Try another newer PSU.
 
Yeah that was what I was going to try. It will be the 2nd PSU I have tried though and I really don't want to spend a fortune on a really nice PSU.
 
Another possiblity could be that your mobo got fried. Every time I've seen a fried mobo try to power up it gives the fans 1-3 rotations and then it dies. Just a possibility but I would definately pick up a good psu and try that first. Chances are it's the psu.
 
No I am using just the 24 pin with the 8 pin CPU connector. Umm +12V 1 is .5-18 and +12V 2 is 1-15 -12V 0-1
 
Well, that doesn't sound like the problem then. Should be enough amps, and no adapter is good.
 
hmm but the chnaces I get two bad boards is wierd. And even if the proc was dead it would at least power on? I am lost.
 
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