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Asus P5BW-LA (Buckeye) with E6300 cpu unstable

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November 12, 2010 3:43:00 PM

Hi, I have a HP M7650n I purchased used. I installed a NVidea GT8800 video card. The computer locks up or windows go transparent with no text after 20min and I have to restart by holding the power button. I checked with Everest it says cpu core voltage is 1.72 should be less than 1.313, CPU temp is in the 60-70C+ how do I reduce cpu voltage back to normal and hopefully a more stable computer?
Thanks
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a c 103 V Motherboard
November 12, 2010 8:03:35 PM

Welcome, Newcomer. If your HP is like any other i've worked on, you can't really change any of BIOS, save for boot order and date/time; the simple stuff. But to address your CPU temp, there could be several possibilities:

1. Insufficient cooling - Open up the case. Clean out any built up dust. Check to see if all fans are operational.

2. Thermal paste - Carefully remove the heatsink and check to see if the thermal paste has dried up. If it has, remove what you can before reapplying.

3. Loose heat sink - Check the heatsink to ensure proper fit, as improper cooling can cause temps to rise.

By the way, it isn't uncommon for CPU temps to reach that high. Typically, with custom built systems, the CPU temp ranges from 32 C to 60 C, depending on cooling. With prebuilt systems, such as your HP, a lot of cheap parts are used and sometimes the manufacturers reduce costs by not using as many said cheap parts ( I.E. less fans than is actually needed).
November 12, 2010 8:59:26 PM

Thanks T_T for the suggestions.
I have already done these good suggestions and the heatsink compound was a little dry so I scraped off the old and applied new but that didn't seem to fix the lock up after 20 min (I am using The Win XP Media Center upgraded to SP3). Maybe I should buy a new heatsink and fan, I am still concerned about the CPU voltage being .4V above recomended. CPU's for this Motherboard are realitivly cheap but from what I read, the E6300 was better than the Pent D9xx series.
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November 12, 2010 9:19:28 PM
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OK. Just for S & G, do a "load optimized defaults" in your BIOS. Then, load into windows and download Prime95, CPU-ID hardware monitor and speedfan. All of these apps are free.

Prime95 will stress CPU by putting 100% load on to it. While this test is going, run HW Monitor and/or SpeedFan, to check your temps while under load.

Though everest is a well-known and respected app, getting a second opinion wouldn't hurt.

And yes, the E6300 is a better CPU than the PD9XX.
November 12, 2010 10:35:11 PM

T_T I navigated past the traps to download registry cleaners and got the programs you recommended. I ran Prime95 for a little over 20min when the text dissapeared from the windows of HW Monitor and SpeedFan so I could not read them anymore. Anyway, HW Monitor Read: Vin0-1.66v max 1.66v, Vin1-1.72v max 1.72, Vin2-1.67v Max 1.68v. Core0 - 83-85C max 85C, Core1 83-85C max 85C. GPU core 60C max 62C. Fan1-4225rpm, Fan2-2455rpm, Fan3-0rpm. Speed Fan: GPU 60C, Temp1 45C, Temp2 (-128C), Temp3 71C, Core0 80C, Core1 80C, Core 60C.
A little warmer than I thought.
November 12, 2010 10:40:17 PM

Oh yes, I loaded default settings for bios. (didn't say "optimized")
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November 12, 2010 10:48:51 PM

^ Load Optimized on some Load Defaults on others.

Open the Device Manager, expand the [+] Display Adapters, right-click on anything NOT nVidia GT (GeForce) 8800 and select Disable, and restart. Also, IF you can then in the BIOS Disable the on-board GPU, Save & Exit {Yes}.
November 12, 2010 11:49:13 PM

sorry so slow, No other display adapters except gt8800. Could not find anything in bios concerning on-board GPU but changed primary video from PCI to PCI-E.
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a c 715 V Motherboard
November 13, 2010 12:04:19 AM

So what's the status?
November 13, 2010 12:11:40 AM

I'm using another computer for this forum. I will leave it on for 20min to see if it locks up again, thanks.
November 13, 2010 12:53:48 AM

I thought it was fixed, went 40min without a glitch but then the same problem with windows loosing text and unable to close them.
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a c 715 V Motherboard
November 13, 2010 1:15:56 AM

Also, if you have ANY ASUS Utilities installed the uninstall them. Next, run MSCONFIG and select Diagnostic and restart. Run Prime95 and post the temps after 10 minutes.

What are the temps? {I assume you're running http://www.cpuid.com/softwares/hwmonitor.html }
November 13, 2010 1:29:55 AM

I believe I ran prime95, see my post at 7:35PM. I will check for ASUS Utilities and run MSCONFIG and select Diagnostic and restart.
a c 207 Ĉ ASUS
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a c 715 V Motherboard
November 13, 2010 1:37:09 AM

Okay.
November 13, 2010 1:40:21 AM

I didn't see any ASUS Utilities in the add/remove program window. I am now in the Diagnostic mode....
November 13, 2010 2:01:56 AM

I DID run prime95 again in the diagnostic mode with the same results as posted at 7:35 PM above. By the way, thanks for the help
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a c 715 V Motherboard
November 13, 2010 11:38:55 AM

Q - What case?
Q - What case fans & are they spinning?
Q - What are the Temps? {Post the CPUID image}
Q - What is the Ambient Temp?
November 13, 2010 2:15:58 PM

Hello Jaquith,
It is a stock HP M7650n silver case with one working case fan in the back. I upgraded the power supply to an antec 650w t3 which appears to be working well. Sorry, I don't know how to "post the CPUID image". I did copy the HW Monitor, HW Monitor Read: Vin0-1.66v max 1.66v, Vin1-1.72v max 1.72, Vin2-1.67v Max 1.68v. Core0 - 83-85C max 85C, Core1 83-85C max 85C. GPU core 60C max 62C. Fan1-4225rpm, Fan2-2455rpm, Fan3-0rpm. Speed Fan: GPU 60C, Temp1 45C, Temp2 (-128C), Temp3 71C, Core0 80C, Core1 80C, Core 60C.
Hope this helps Ambient Temp? If your talking no load CPU temp then both cores are about 50C. I am still concerned about voltage to the E6300. Specs say 1.313v, test shows 1.7v.
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November 13, 2010 2:54:48 PM

Ambient Temp = how hot is it in the room?

Idle temps of 50C are too high unless it is 100+ Fahrenheit in the room. All (3) suggestions of T_T are correct, and if a core gets above ~85C then it will become unstable. If you never changed the CPU paste {it must have Thermal Paste}, or if the CPU Fan isn't working properly or if the CPU cooling fins are blocked/clogged with dust then the CPU will overheat - easily! Assuming Fan1-4225rpm = CPU fan then apparently it is not cooling properly.

Regarding the CMOS - are you certain that you cleared it? The simplest way is to shutdown the PC, unplug, and remove the CMOS battery for approximately 15 minutes then Boot into BIOS and the system clock 'should' be reset and require you to change the date & time; if not then you did not clear CMOS. -- this will set the Voltages to normal.

Again, I assume that you have NO BIOS Utilities running. Verify by running MSCONFIG and select Diagnostic, save and restart.

November 13, 2010 3:24:23 PM

Thanks, Ambient temp for my computer room averages 68 - 75F. I have totally cleaned out dust from the computer, CPU cooling fins are not blocked or dirty, I pulled the fan and heatsink and replaced the silicone heatsink paste because it was getting dry, I ran msconfig and sellected diagnostic and restarted. I don't recall T_T mentioning anything about clearing CMOS but I will do that and get back to you. I have to be gone for about 2 hrs but will reply after that. Regards
November 13, 2010 6:34:48 PM

I removed the CMOS battery for 1hr checked voltage (2.98v) and replaced. Rebooted entered time/date finished loading windows xp. Ran CPUID hardware monitor and under Fintek F8000, voltages: Vin0 1.66v, Vin1 1.72v, Vin2 1.67v.
Temeratures: (normal operation) TMPIN0 44C, TMPIN2 43C (MAX TEMPS)
Under Intel Core 2 Duo E6300 Temperatures: Core #0 48C Max 56C, Core #1 46C Max 57C. GPU (gt8800) temp 64C.
Thanks
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a c 715 V Motherboard
November 13, 2010 7:08:35 PM

That's a BIG Difference, but Good!

Good Luck!
November 13, 2010 11:08:59 PM

Thank you for your help

Regards,
November 24, 2010 3:53:16 PM

Best answer selected by ggil44.
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November 25, 2010 12:34:51 PM

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