PC freezes at bios

July 24, 2011 at 09:34:03
Specs: Windows Vista, AMD Phenom 9500
I just installed a new motherboard(m2n68-narra3) reconnected all components, now it freezes at entering bios setup. Any suggestions on what to do next would be appreciated.

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July 24, 2011 at 10:08:25

Strip it down and bench test it. That will be the only way to tell what's causing it to not post.

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July 24, 2011 at 10:15:21
For starters, you never should have swapped the board without benchtesting it 1st. Then, assuming it passed the benchtesting, it should have been installed in the case & tested again, without connecting any of the drives or any other "unnecessary" components. Once passing that test, THEN the aditional components should have been connected. Since you have it in the case, disconnect all the drives & all external devices except monitor & keyboard, then see if you can access the BIOS & properly configure the settings. If it still freezes, check your heatsink installation - too much or too little paste can cause the CPU to overheat.

And unless you you're swapping out identical boards, Windows will have to be reinstalled. The board you listed is an OEM board from HP & it's based on the old GeForce 6150SE / nForce 430 chipset combo. Do you have an HP system?


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July 24, 2011 at 17:26:23
Thanks Mickliq, I did a bench test prior to putting the board in the system, and I did try a more thorough bench test on each component, still freezes at "entering setup screen. I will also clean the old thermal paste off the cpu and put new paste on it.
Any other suggestions I would definitely appreciate.

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Related Solutions

July 24, 2011 at 23:44:00
Usually a hang is caused by something hardware related.
REMOVE the power to your case/power supply.
Open up your case.
- a poor connection inside your case. Make sure all connectors and cards and the ram are properly seated. All data cables connected to hard drives capable of UDMA 66 or greater must be 80 wire ones. If in doubt, unplug, plug back in - be careful unplugging data cable connectors - if they are tight, pull on a strap if available rather than the cable itself if it has that, or pull on the center of the data cable - it is easy to rip the data cable and break wires if you pull on either side.
- a poor connection in your ram slots - See response 2 in this - try cleaning the contacts on the modules, etc.
- overheating of your cpu. Make sure the cpu fan and heat sink are reasonably clean.

When you boot with the case open, the cpu fan should spin the speed it is supposed to, and not make any rattling or screeching noises which are most likely to happen when the computer is booted after have being off for a long time. If you're not sure whether the cpu fan is spinning it's properly speed, look at the current rpm reading in the bios Setup hardware monitoring information when the computer is running - the rpm should not vary much. In the same place you can check whether the cpu temperature is reasonable - best done when the computer is thuroughly warmed up.
- if you have ever had to replace a defective cpu fan, the cpu may have been damaged while the cpu fan was defective.

- your power supply is defective. Failing power supplies are common and can cause your symptoms.
Check your PS.
Less likely but quite possible.....

- a CD drive that is starting to fail - e.g. you may get delays if there is a CD in the drive and the drive motor can no longer spin properly, or even without a CD in a drive if the logic board on the drive is defective - disconnect the data cable to the CD drive(s) and try your computer for a while.

- something on your computer was damaged by a power spike or surge and your computer was not protected from that, or is not protected from that now. Everything connected to your computer should be protected - including the AC supply to your printer, router, high speed modem, etc., and the cable that connects you to the internet and/or to a fax modem - coaxial or telephone.

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