~misfit~ wrote:
> A friend bought a lemon. It has an Asus M3A (vanilla) mobo and a crappy
> Thermaltake 430 W PSU, both of which, IMO, need replacing. He bought it to
> me a week or so after buying it as it kept crashing. I Googled both the above
> components and realised that the company who sold him the PC were obviously
> getting rid of lemons.
>
> The rest of the PC seems OK. Phenom 9500, Seagate SATA II 500 GB 7200.11
> HDD. Asus optical drive. XFX 9600GT PCIe card, Thermaltake Soprano case..
>
> Despite me getting the PC to what I thought was a stable condition a couple
> weeks ago it's crashing on him every 15 - 30 minutes. It's random and
> doesn't seem to be tied to load, either graphics or CPU. He's decided that
> he'd like to keep everything except the mobo and PSU and get me to rebuild
> for him. (RAM? We'll face that if/when we come to it. It's a single 2 GB
> stick of DDR2/400 AFAIK)
>
> I know what PSU I'll use (AcBel for anyone interested, best value for money
> on the market, at least here.
>I like Asus (it's all I use personally) but I've had good experiences with
< Gigabyte too. My first instinct was to get a mobo with the
> same chipset to avoid re-installing XP. (I'm not being paid for this, it's a
> favour to a mate) However, I don't know if that's a good idea.
> Also, please bear in mind I'm in New Zealand
There's nothing wrong with AMD systems, and while AcBel's PSUs aren't
the very best, they're more than good enough.
I'd check voltages, heat, and memory.
Verify that the CPU heatsink is firmly pressed against the CPU (i.e.,
no broken hook or latch) and that its fan spins at a decent rate. Run
the machine with the case open, and if it stops crashing, look for bad
air flow due to a case fan blowing the wrong way, cards or cables
blocking air flow, or hot air blown out by a fan being sucked back
into it.
Measure the voltages with a digital multimeter (cheapos are more than
accurate enough, but try to get something rated for at least 3.5
digits, or 2000 count), including at the connectors that are plugged
into the mobo and hard drive because unplugged connectors can be
horrible but still show good voltages (no current flow = no voltage
droop). Also measure the motherboard for the voltages going to the
CPU, PCI-e slot, and memory connectors.
Test the memory overnight with a GOOD diagnostic, like MemTest86
(
www.memtest86.com), MemTest+ (
www.memtest.org), and Gold Memory
(
www.goldmemory.cz). The latter will probably find errors the
earliest. Many other diagnostics will miss even really bad errors --
see the review of RAM diagnostics at
www.RealWorldTech.com. I've run
one diagnostic they disliked, DocMem, from SIMMtester.com, for hours
without it detecting errors, but MemTest86 or Gold Memory would fail
the same modules in the same mobos within minutes. A lot of junk
memory has been sold, even by the biggest module makers, like
Kingston.
What brands of mobos and PSUs are available in your area?
Some very good brands of PSUs that are hard to find on the retail
market in the US include Delta, Zippy-Emacs, Newton, LiteOn (AKA
SuperMicro), Enhance, Wintact, and Etasis. Many of these are sold
under other brands as well. Good brands we can get here include
Fortron-Source-Sparkle (Thermaltake GamePower and ToughPower, Antec
Basiq), Seasonic (almost all other Antecs, some still by Channel Well
Technology -- CWT, which would be great if they got away from the
junky Fuhjyyu capacitors and run them so hot with their slow fans).