PC Cuts Out on intense usage

edited September 2004 in Hardware
Hi everyone !

Right now where to begin. I have the most bizarre problem with my PC. First of all my PC spec is as follows :

Gigabyte K7 Triton Motherboard (7NNXP)
AMD Athlon 3200+ procesor
1 Gb DDR 3200 RAM ( 2 x 512 Mb Sticks )
Gainward 256 Mb 6800 GT Graphics Card (3 days old)
2 x 120GB Maxtor HDDs
160 GB Maxtor SATA HDD
Promise Ultra Card
Thermaltake Xaser V series case
Q-Tec 550W Dual Fan PSU
NEC RW-DVD Drive
Lite-on RW-CD Drive

Right now this is the problem. Ive had a number of problems with my PC in recents months and as such have done a complete overhaul of my PC. However earlier this summer once I had fitted all my new equipment into my new motherboard I thought I had my PC workin properly. However I played a movie on it and a blue screen came up saying there was a problem with some of my hardware or I didnt have the correct drivers and it was shutting my computer down after doing a memory dump. I re-installed windows XP pro and i thought that had fixed the poblem. However I played a movie and the pc just powered down for a split second and then it restarted itself but nothin came on the screen. No start-up no memory check the monitor was totally blank, but the PC still had power to it and was running. I assumed this meant that I had a dodgy graphics card, which seemed reasonable because it was probably the weakest link in my machine at the time. So i bought a new 6800 GT card for a lot of money. However I had the exact same problem. This time I was playing doom 3 and the computer powered down for a split second and then continued running but the screen remained blank.I messed around a little pulled out components and put things back in, and after a while it seemingly randomly started again. So this time I formated my drive and installed w2k. The motherboard drivers and the latest nvida graphics drivers. This time I started playing need for speed underground and the exact same thing happened. I have a 550W psu so it cant be lack of power. I have a new graphics card. My motherboard is new ( however i think one option is that its faulty ). The other thing I think it may be is that I have a problem with one of my HDDs. It seems whenever Im doing something intense ( so far each time its happened, somethig itenense and graphics related ) my PC just cant seem to cope. Ive had this re-curring problem for about 8 weeks and im completely stumped. I just cant think of a reasonable explanation and Ive thrown so much money at it now thats its just ridiculous that im still having problems. Some1 please help !

Comments

  • GobblesGobbles Ventura California
    edited September 2004
    I have a 550W psu so it cant be lack of power.

    Absolutely false... Id bet it is the power. Either that unit is defective or its a low end unit. The 6800 requires so much power they put 2 molex jacks on it. Be sure that you have the power to the graphics card plugged in. If it is, id seriously look into a new PSU.

    Not all PSU's are good even at 550w
  • TheBaronTheBaron Austin, TX
    edited September 2004
    Gobbles wrote:
    Absolutely false... Id bet it is the power. Either that unit is defective or its a low end unit. The 6800 requires so much power they put 2 molex jacks on it. Be sure that you have the power to the graphics card plugged in. If it is, id seriously look into a new PSU.

    Not all PSU's are good even at 550w
    things I'd like to see:
    voltages and temps
    run memtest
  • edited September 2004
    Having just skimmed over a review of that PSU here...http://www.bit-tech.net/review/123/ I can't help but feel these guys are correct in their assessment that the PSU is to blame, the heatsink inside that PSU is the tiniest I've seen and that's including the sink in a uber cheapy Deer 250w PSU I had that caused an old system of mine to exhibit the same symptoms yours is.
    Long story short I put in a better PSU and the problems went away.
    BTW Gobbles the 6800GT only has one molex, the Ultra has 2 but I think the GT is nearly as power hungry.
  • JimboraeJimborae Newbury, Berks, UK New
    edited September 2004
    Sorry to say this but

    Q-tec = pile of crap

    I've used one of those 550w psu's and its cheaper than a Mosside crack tart. Very poorly built, ie flimsy & crappy capacitors that leak more than the said tart, and cant hold a stable voltage to save it's life.
  • edited September 2004
    wow ok so a pretty unnanimous thumbs down for my psu !!

    ok guys im gonna try a new psu, any recommendations?
    bearing in mind that i have a thermaltake case with 7 fans, and LEDs galore, a fan control unit which takes 2 power connectors, a 6800GT graphics card and yeh it does only have one power connector on it, 3 hdds, 3 optical drives, a promise ultra card and a floppy drive. so i need plenty of power. I cant run mem test at the moment cause I havent even got my computer back up to speed yet ! still recomendations appreciated and thanks for the help.
    only other question I have is that if its the psu, and my computer isnt getting enough power, once it resets itself, why doesnt it restart, instead my monitor remaining blank with nothing coming up until i mess around with the internal components at which point it seems to randomly work ?
  • Geeky1Geeky1 University of the Pacific (Stockton, CA, USA)
    edited September 2004
    I've just googled that PS; I can't seem to find anyone in the US that carries it (at least within the first 3 or 4 results), but the thing seems to generally cost around 30GBP. That's around $50. You won't get a 550w PSU for $50, and after seeing the pics in the review madmat linked to, that thing looks more like a generic 250-300w unit. PSU ratings are not standardized, and so it wouldn't surprise me to learn that Q-Tec's 550w rating is for a few milliseconds at a hysterically low temperature.

    Anyhow, I'm hesitant to say that the PSU is absolutely, 100% certainly your problem. It very well could be though. Do you have a multimeter by any chance?

    Also, I'd try running memtest on it. You can get the program here:
    http://www.memtest86.com/#download1

    If it runs for an hour without errors, your memory is most likely not the culprit. If it starts showing a ton of errors, you can stop the test because you've found at least one of your problems- one or both sticks of your ram is bad. Then you need to re-test the sticks individually to find the bad one.

    It could also be the Gigabyte board; Gigabyte is not highly regarded by most people around here... (although fwiw, the gigabyte dual P2/3 board worked fine for the 10 minutes or so it was on when I had it) :-/

    Let's not throw money at the thing without knowing that it'll do some good, hmm? :)
  • edited September 2004
    ill have to get the pc back up and running before i can run mem test. only thing is im afraid my pc will just cut out again. and no i dont have a multimeter. i think that im goin to take every1s advice and change my psu first and hopefully thatll be the solution to my problem. Other question i have aswell is that is all this power cutting out likely to damage the components in my pc? cause i am a little worries since i have some particularly expensives harware, especially my £330 graphics card !
  • Geeky1Geeky1 University of the Pacific (Stockton, CA, USA)
    edited September 2004
    It's not LIKELY, but it's POSSIBLE, yes. I'd be more worried about the PS deciding to die on you; PSUs can, will, and in some cases do take everything in a system (hard drives, optical drives, motherboard, cpu, ram, video card, etc.) with them to the grave.

    For a new PSU, there are basically three brands I'd consider:
    Antec, Enermax, and PC Power & Cooling

    Antec and PCP&C are probably your best bet; I use Enermax PSes on some of my machines, and they've always worked very well. However, there are more people in my experience that have had problems with them than either Antec or PCP&C. Also, this ad compares a 550w Enermax to a 510w PC Power & Cooling unit, and the claims they make are all true:
    http://www.pcpowerandcooling.com/pdf/Turbo-Cool_510_vs.pdf

    So, if you can get them in the UK, and you're willing to spend the money on it, a PC Power & Cooling unit is the best thing on the market, followed by Antec and Enermax in that order.
  • JimboraeJimborae Newbury, Berks, UK New
    edited September 2004
    Even if its not the PSU (although it certainly sounds like it) I'd still recommend replacing the psu with all the gear superfly has in there. I really can't describe how bad they are. In fact with all that gear I'm surprised you had enough molex connectors for it all as there aren't that many on the Q-tec or were you using splitters.

    As for recommendations i'd try Antec, FSP Fortron or Thermaltake. Alot of people here like Enermax but I've had two rogue one's and wont use them anymore.

    For psu's try overclock.co.uk, they have a good range, their prices are ok and their customer support is top notch

    Overclock.co.uk - PSU page
  • edited September 2004
    yeh i bought a 10 pack of splitters, 3 of which i used in my case !
  • edited September 2004
    ok i think im decided on an antec 450w smartpower psu. that should be enough to power my machine right?
  • Geeky1Geeky1 University of the Pacific (Stockton, CA, USA)
    edited September 2004
    Jimborae wrote:
    As for recommendations i'd try Antec, FSP Fortron or Thermaltake. Alot of people here like Enermax but I've had two rogue one's and wont use them anymore.

    Forgot about Fortron. They're another good brand to consider. You also might consider Vantec, Thermaltake (as Jimborae mentioned), and any Sparkle PS with "FSP" in the part number (indicating that it's a Fortron-OEM'd PS). However, PC Power & Cooling is the best manufacturer out there, period, bar none, and Antec is probably second. Fortron and Enermax are excellent, and the Vantec and Thermaltake are also supposed to be decent.
  • Geeky1Geeky1 University of the Pacific (Stockton, CA, USA)
    edited September 2004
    The 450w SmartPower should be sufficient, although you might consider a 480w or 550w TruePower simply for upgrade headroom.
  • rykoryko new york
    edited September 2004
    i would like to throw in my vote for <a href="http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=273002&ps=ho11">this ultra modular 500w psu</a> or this <a href="http://www.newegg.com/app/ViewProductDesc.asp?description=17-103-924&depa=0">antec modular neopower 480w</a>

    Also, i have used an antec 450w smartpower in my rig below for about 4 months without any problems, but if you are going to buy new you might as well go modular!
  • pokesquid808pokesquid808 SO CAL
    edited September 2004
    does the computer automatically restart when it blue screens? if so right click on my computer->properties->advanced->settings under startup&recovery and uncheck on restart automatically. next time it blue screens, if it does, right down the error code and search for it in the microsoft knowledge base or post back on here with the error code. i've found that helps in identifying the problem a little better. but yeah i would definitely replace the power supply. i had to replace mine when i bought a new case because the stock one was a generic piece of crap and my comp constantly died. went with an antec, stable voltage since :)
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