1. TechSpot is dedicated to computer enthusiasts and power users. Ask a question and give support. Join the community here.
    TechSpot is dedicated to computer enthusiasts and power users.
    Ask a question and give support.
    Join the community here, it only takes a minute.
    Dismiss Notice

Replaced motherboard and power supply now I freeze.

By Ship_Mate · 9 replies
Jan 14, 2006
  1. Hello I was wondering if someone would have a salution for me or suggestion.

    I have recently bought a

    MSI 6791-FX 400/533/800FSB Pentium 4 Micro ATX Motherboard with Audio and LAN


    • Supports Intel® Socket 478 for Pentium® 4 (Northwood) Processors
    • Support up to 3.2GHz/FSB 800
    • Supports FSB 400/533/800 MHz


    • SiS® 648FX Chipset
    • Supports Intel® Pentium® 4 processors with data transfer rate up to 800MHz.
    • Supports 64-bit high performance DDR333/DDR266 memory controller.
    • Supports AGP 8X/4X interface at 0.8v or 4x at 1.5v with fast write transaction.
    • Dual-IDE ATA 66/100/133.
    • ACPI & PC2001 compliant enhanced power management.
    • Low pin count interface for SIO
    • Integrated audio controller with AC97 interface.
    • Integrated high speed USB 2.0 controller, 480Mb/s.

    Main Memory

    • Supports two 184-pin DDR DIMM.
    • Supports up to 2GB memory size without ECC.


    • One AGP (Accelerated Graphics Port) slot.
    - AGP specification compliant.
    - Supports AGP 2.0 4x/8x.
    • Three 32-bit PCI bus slots.


    • RealTek 8100C PHY.
    - Supports 10Mbps and 100Mbps auto-negotiation operation.
    - Supports ACPI power management.


    • 6 channels software audio codec RealTek ALC655.
    - Compliance with AC'97 v2.3 Spec.
    - Meet PC2001 audio performance requirement.

    and a

    Titanium Powmax Assassin 500Watt 20 or 24 Pin Power Supply w/ 150mm Blue LED Fan, SATA, PCI-E

    Assassinate your opponents with this elite gamer style power supply. Not only does it have next generation PCI Express video connector and SATA support, but it features an enormous 150mm fan for maximum airflow and glowing LED lights.


    500W Maximum Output
    15CM High Efficiency Green LED Fan w/ Ultra Silent Design
    Excellent Heat Dissipation by Honey Comb Structure
    Built-in Voltage Overload Protection
    Colored Heat-sink and LED On/Off switch
    Shielded Tube and Black Connectors
    1 x 20/24 Pin Main Connector
    1 x PCI Express Connector
    2x Serial ATA connectors
    Support Intel "Pentium-4" and AMD "Athlon XP
    Complies with ATX 2.03 and ATX12V 1.3


    Model: PSAS
    Dimensions 6"Wx3.6H"x6.6"D
    AC Input 115/230, 10A/6A, 60Hz/50Hz
    Max Load +3.3@28A, +5@38A, +12@17A, -5@0.5A, -12@0.8A, +5vsb@2A
    MTBF 100K hrs at 25°C ambient conditions
    Efficiency 70% Min. at full load
    Noise Level Maximum of 37db at 100% system loading
    Certified by UL, CB, CE, TUV, & FCC .

    I put in my Intel Celeron P-4 2.93 GHz CPU with its original Heat sink and fan I also replaced the Thermole Grease. I have a rear exast fan as well. All Fans work well there all pritty new. I have 798 MB of DDR and a Nvidia GeForce FX 5500 Video Card. Its fan is working as well.

    My problem is this I am apperintly overheating. I can run my PC some times till windows loads and some times just a couple minutes longer.
    If I open my back door and put a small box fan on my PC I can run till I am ready to turn it off long as the weather out side requires a jacket. Any help would be appriciated. I have used the MSI Live Update and got all drivers and utillitys running. I have also checked and my BIOs is up to date. I am running Windows XP.

    I had fried my original motherboard and power supply by hooking a bad monitor up. I got the dreeded black screen. My PC was perchased at Wal-Mart and was a hp pavilion a705w.

    Thanks for your time and I pray someone can help. :knock:
  2. dmill89

    dmill89 TS Guru Posts: 475

    start by checking all the jumper settings.If there ok or resetting them doesn't work try flashing the bios if you can. make sure all cards,connectors tightly inserted,If problems persist remove devices one at a time.if it works when you remove a device then that device is the problem and needs to be replaced.If any of these are shorted they could cause freezeing.
  3. dmill89

    dmill89 TS Guru Posts: 475

    try liquid cooling.
    the problem may be the fan controler or temp sensors in the new motherbard.
  4. Ship_Mate

    Ship_Mate TS Rookie Topic Starter

    Thanks dmill98 I will give them a try thanks for suggestions. :hotbounce
  5. computer help

    computer help TS Rookie Posts: 68

    at a glance

    at a glance your cpu is stuffed sorry for the bad news !
  6. kaymastah

    kaymastah TS Rookie Posts: 43

    Just to clarify one thing... did you reinstall XP after getting the new mobo? or did you just luckily manage to update the drivers without searching for XP cd?
  7. Jesse_hz

    Jesse_hz TS Maniac Posts: 545

    Before trying anything go into your bios and see if your CPU is running at the correct vcore(voltage) and clock speed.

    If any of these have somehow gotten set too high (I wouldn't know how :) ) your CPU may be dissipating (giving off) more heat than your heatsink/fan are rated for,
    and DON'T try to flash an unstable machine!
  8. kaymastah

    kaymastah TS Rookie Posts: 43

    Yeah... flashing BIOS would not be smart is such case. If you are not sure abou BIOS settings just revert to factory defaults.
  9. hewybo

    hewybo TS Maniac Posts: 435


    DOUBLE-CHECK your application of thermal compound and proper seating of heatsink/fan!!!!! If your CPU wasn't trashed before, it might be goin south now. Did you thoroughly clean the old paste off? I say this because that box fan helped out. COOLING,COOLING! :(
  10. squirmy

    squirmy TS Rookie

    Your power supply is one of the problems

    I made the mistake of getting a Powmax Assassin 550W for my dual-core setup. I set up my machine without thinking... had I considered what I was doing for a second, I would have detected BS.

    1) the power supply doesn't weigh enough to be a true 550W power supply unit (PSU). This is because there are no heat sinks worth a crap in it, and the caps are underrated.
    2) the fan spins way too slowly... to appease someone who wants a quiet PSU.
    3) The entire PSU is full of holes. It's built in a mesh box. HOW is air going to channel up and out the back of your computer? Answer: it won't.

    Great site on how a techie debunked the low-end Powmax cheeso power supplies: http://www.jonnyguru.com/PSU/Assassin/Powmax_Assassin.html

    Mine lasted about 2 hours before making a funny smell. Then it blew up. THEN I looked for reviews on it. Stupid me, never again. I could have blown up about $800 worth of gear. Lucky for me, it seems only the power supply blew - but I have read many accounts in the last two hours of folks who were not so lucky.

    Bottom line: if you value your equipment, spend at least $60-70 on a power supply... no, wait.... make that $90-130. Depends on what your requirements are -- but a good rule of thumb is to know how much it weighs. Never trust the advertised sticker wattage is my take-home message.
    Excellent site to contrast/purchase PSUs:

    Next: consider a cooling mod. This one is inexpensive and excellent. May take a little work, though.

    Your PSU is the most important component in the box. Don't skimp on it.
Topic Status:
Not open for further replies.

Similar Topics

Add New Comment

You need to be a member to leave a comment. Join thousands of tech enthusiasts and participate.
TechSpot Account You may also...