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Strange Days Indeed

W

wizzard777

Junior Member
Ok, I built about 10 computers overclocked 4 and helped hundreds of poeple with techincal support issues. But this has me stumped. I build a computer using a Shuttle XPC case power supply and motherboard. Worked good for 9 months, then power issues.

Press the power button the leds for the power and HD flash then nothing no fan, no boot, no nothing. I think power supply call tech support get RMA send it in and they send it back saying nothings wrong, they put all there componets and it worked fine.

Ok I put all the componets back in and it worked fine for 3 days (4 turn offs and on) then nothing. I put in other componets from another computer that is working and presto it works. I put the componets from the Shuttle in a different computer and they work fine. Run hardware scans and virus scans on both computers, no problems. (3dmark, sandrasoft, avast).

Swap everything back to their original places and the Shuttle boots once, seems fine , shut down. Now, will not boot, back to square one.

Questions:

Whats my porblem? no flames please.... LOL
How do I fix it? (same as above)

# CORE HARDWARE

* Power supply Shuttle 220w
* Motherboard Shuttle FB61
o Revision 2.1

* CPU Intel P4 2.4g

* Memory 512MB Corsair value select DDR 400


# CARDS

* Primary video card Nvidia Ti4600 AGP 8x
* PCI slot #1 (top) empty
* PCI slot #2 N/A (this board only has one PCI slot)
* Onboard sound and LAN

# DRIVES

* Boot drive 120GB WD with 8mg buffer 7200
o Interface IDE 1
o Jumper setting Master

* Optical drive #1 NEC 3500A DVD burner
o Interface IDE 2
o Jumper setting Master

# OS AND SECURITY

* Operating System WindowsXP Home
* Service Pack SP2
* Internet connection Cable
* Hardware firewall D-link router
* Software firewall WindowsXP firewall
* Antivirus Avast
 
That last time when you go it started and then shutdown and would not restart, how long did you have it up and running before you shut it down ?

Are temperatures all in normal ranges ?

Edit: Also, when you were talking about that you swapped components from another computer, did you swap motherboards or just all of the other components ?


 
I did not swap motherboards just componets as the mother board for the Shuttle is quite small and kinda buried in the Shuttle case. Although if I did that it would isloate the motherboard away from the power supply and i moght be able to elimate the motherboard as not part of the problem.

No I have not reflashed the bios the supproting docs don't show this I'll check the net for how to do it on this motherboard.

Thanks for your reply

 
Is it possible that you have a partially defective CMOS battery ? From the circumstances you described, it has to be something that is going wrong randomly on the motherboard. I would guess either battery, defect in CMOS chip or just a slightly out of spec motherboard. Sounds like you have eliminated everything else.

Good luck.
 
I did reflash the bios and nothing no change. As for how long i had it running, I left it on all night 10 hours with a typical xp home config and a windows 3d screen saver running. The system did not seem overly hot , infact it seemed that the air blowing out was room temp 70 f.
 
One of the first things I'd do is to set the Western Digital hard drive to Single Master instead of plain old standard Master, if it's not that way already. Single Master is when there's no jumper on the pins, just take it off completely.

Other than that, I'd change (don't laugh) the power strip that the system's plugged into, and test the Shuttle with a different PSU as a fact-finding step.

Also, I haven't worked with a Shuttle SFF, but some motherboards will turn the computer off immediately if they don't detect a fan RPM on particular fan headers. Maybe you have such a mobo, and maybe you have a fan whose RPM signal is not high enough or strong enough or whatever. You can test that pretty easily by putting some mid-speed fans with RPM signals onto the fan headers and trying to start it while it's in its grouchy mood.

Good luck 🙂
 

Thanks for the replys. I tried a new power cord and surge protector in a different outlet in my house that is even on a different curcuit, no luck and no boot just the leds flash once then nothing. I also tried the hard drive with no jumper no luck either. I'll have to dig around for a fan or two in attempting your other suggestion.

Thanks again
 
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