6600GT lockup

Reading your message I've left the biggest culprit showing.

The problem isn't necessarily the current on the 12v rail, which may be
fine. It's the fact that though your 300W Enermax PSU is a good one for
its capacity, it just doesn't have the juice.to supply the card and the
other bits in your box. The CPU alone will take a chunk, as will the
motherboard, then there's the Hard Disk, the CD or DVD drive, a floppy
disk and a fan or two... All adds up.

Another poster stated a quality 350W PSU is a minimum and I must agree.
Saw similar lockup and loss of BIOS info when a friend got a GF6600GT
shortly after me. Changed his PSU to an Enermax 450W (I have a Tagan
580W but have a lot of stuff in my tower case) and it was fine.

BIOS info can be lost if there is a shortage of required current to the
CPU when the Motherboard is reading the CPU speed, etc. as the
motherboard can then misread things.

Another one is check for bulging / leaking capacitors on the motherboard
(esp. the big ones near the CPU socket). If they are, it can be a sign
of them struggling and can possibly mean you need to replace the M/B,
the video card change could have put the M/B over the edge. Difficult to
tell without testing things.

Try borrowing a larger PSU from someone and give it a try. Hopefully
you've no permanent damage. If not, motherboard investigations begin.

HTH

Neil.

In message <4324ba69.84680015.DeleteThis@news.waikato.ac.nz>, Hamish
<hamishh_.DeleteThis@waikato.ac.nz> writes
>Mother board is an ASUS A7V8X by the way and the powersupply is a
>Enermax 300watt delivering 15a on the 12V rail. Idon't have much else
>connected and have been told that the PSU is fine for the card.

--
Neil J Bundy
 >> Stay informed about: 6600GT lockup 

On Tue, 13 Sep 2005 00:22:02 +0100, Neil J Bundy
<nospam_bubbleman RemoveThis @neil-bundy.demon.co.uk> wrote:

>Reading your message I've left the biggest culprit showing.
>
>The problem isn't necessarily the current on the 12v rail, which may be
>fine. It's the fact that though your 300W Enermax PSU is a good one for
>its capacity, it just doesn't have the juice.to supply the card and the
>other bits in your box. The CPU alone will take a chunk, as will the
>motherboard, then there's the Hard Disk, the CD or DVD drive, a floppy
>disk and a fan or two... All adds up.
Did the PSU calc on my system and at max load i need about 250W give
or take 10.
Forgot to mention that i was running a 400W generic PSU when this
happened and that was only delivering 10amps on the 12V so ripped it
out and replaced with the Enermax i had lying around.
>
>Another poster stated a quality 350W PSU is a minimum and I must agree.
>Saw similar lockup and loss of BIOS info when a friend got a GF6600GT
>shortly after me. Changed his PSU to an Enermax 450W (I have a Tagan
>580W but have a lot of stuff in my tower case) and it was fine.
I'll look at upgrading the PSU as soon as i can.. but for the time
being im running the card on its own line with nothing else
piggybacked to it.
>
<snip>
>
>Another one is check for bulging / leaking capacitors on the motherboard
>(esp. the big ones near the CPU socket). If they are, it can be a sign
>of them struggling and can possibly mean you need to replace the M/B,
>the video card change could have put the M/B over the edge. Difficult to
>tell without testing things.
<Snip>
Capacitors on the M/B look fine.. nothing shows up with them so im
hoping all is ok.
<snip>
>--
>Neil J Bundy
 >> Stay informed about: 6600GT lockup 

In light of your checking the current you may be okay with the card on a
separate spur, unless you're doing pretty intensive 3D then it may get
close.

Good luck!

In message <43262b37.67838218.TakeThisOut@news.waikato.ac.nz>, Hamish
<hamishh_.TakeThisOut@waikato.ac.nz> writes
>On Tue, 13 Sep 2005 00:22:02 +0100, Neil J Bundy
><nospam_bubbleman.TakeThisOut@neil-bundy.demon.co.uk> wrote:
>
>>Reading your message I've left the biggest culprit showing.
>>
>>The problem isn't necessarily the current on the 12v rail, which may be
>>fine. It's the fact that though your 300W Enermax PSU is a good one for
>>its capacity, it just doesn't have the juice.to supply the card and the
>>other bits in your box. The CPU alone will take a chunk, as will the
>>motherboard, then there's the Hard Disk, the CD or DVD drive, a floppy
>>disk and a fan or two... All adds up.
>Did the PSU calc on my system and at max load i need about 250W give
>or take 10.
>Forgot to mention that i was running a 400W generic PSU when this
>happened and that was only delivering 10amps on the 12V so ripped it
>out and replaced with the Enermax i had lying around.
>>
>>Another poster stated a quality 350W PSU is a minimum and I must agree.
>>Saw similar lockup and loss of BIOS info when a friend got a GF6600GT
>>shortly after me. Changed his PSU to an Enermax 450W (I have a Tagan
>>580W but have a lot of stuff in my tower case) and it was fine.
>I'll look at upgrading the PSU as soon as i can.. but for the time
>being im running the card on its own line with nothing else
>piggybacked to it.
>>
><snip>
>>
>>Another one is check for bulging / leaking capacitors on the motherboard
>>(esp. the big ones near the CPU socket). If they are, it can be a sign
>>of them struggling and can possibly mean you need to replace the M/B,
>>the video card change could have put the M/B over the edge. Difficult to
>>tell without testing things.
><Snip>
>Capacitors on the M/B look fine.. nothing shows up with them so im
>hoping all is ok.
><snip>
>>--
>>Neil J Bundy
>

--
Neil J Bundy
 >> Stay informed about: 6600GT lockup 

On Wed, 14 Sep 2005 23:45:27 +0100, Neil J Bundy
<nospam_bubbleman DeleteThis @neil-bundy.demon.co.uk> wrote:

>In light of your checking the current you may be okay with the card on a
>separate spur, unless you're doing pretty intensive 3D then it may get
>close.
>
>Good luck!
<snip>--
>Neil J Bundy

Thanks ... been running fine since i posted previously so someone must
like me
 >> Stay informed about: 6600GT lockup