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View Full Version : Prom sys keeps rebooting @ Win CPUtemp@45C?



Liquid3D
04-26-2003, 05:58 PM
Hello all.
First: I don't know how many have used Prommie's case w/8RDA, and found microfreezer has serious amount of tension trying to align it w/socket, but this was my first challange.

Second: the instructions mention a "fitting foam gasket" yet there's none included. There is what seems to be a low voltage "heater" in the rear plate, (possibly to counter condensation) however; the directions eschew this as well. I tried it first with this unplugged, and then powered. No difference.

Third: after ensuring there was contact between microfreezer, and core by verifying thermal paste had been compressed, I then tightened down the twin spring mounting fasteners (with three washers under each) powered up unit, yet it continued rebooting everytime WindowsXP screen started. Sometime it would actually get all the way to the desktop, where I could read MBM-5, and the temps read 45C with no (-) preceeding the 45C. Although the microfreezer temp read -45C, I assumed perhaps contact wasn't secure enough, and the excess temp's were affecting stability. It was very confusing because the microfreezer temp read -45C, and MBM-5 read 45C. I thought perhaps MBM-5 had no ability to read negative values? However I thought I've seen reviews where MBM-5 did read negative values. There were video errors even during BIOS adjustments, as if the temperature was either too cold, or too warm. I'm worried I dmaged my CPU, but I don't beleive it climbed over 50C.

I really need help. How can I stop the random reboot's? And if the rear cover is slightly off center would this have an adverse affect? Finally, does adding washers compensate for a loose fit on the core, or removing them? I only have one more washer per side?

FUGGER
04-26-2003, 06:18 PM
Are you running a power conditioner?

Make sure the leads are going to the right spot. Your motherboard should be in a "reset" state while the system drops in temp to -34c. Then the Prom should drop fan speed and the system will power up.

Some kits were shipped with a foam insert. iirc it was the early systems and the did not have the heating element.

Some motherboards react differently to the Prom when starting. I have had the most problems with Asus boards.

My current P4C800 has problems booting with the Prom. I have to install the conditioner to bring the system down in temp, turn the system off from rear switch, remove the conditioner, and fire up again. If I try to fire up with just the conditioner the system will never boot say "NO CPU INSTALLED" over and over. If I try to boot without the conditioner the system will start immediatly or go into the "NO CPU INSTALLED" and goes to +40c and shuts down. Guess how long how long till this P4C800 is kicked to the curb?

Liquid3D
04-26-2003, 06:58 PM
What's a Power Conditioner ? (I know it's a stupid question)

I'm thinking the "shim" that's provided has cutout's for the circuits which protrude up on each side of the TBred core ("SMD components") and that these cutout's are allowing the large copper head of the microfreezer to possibly be causing a short? However the instructions state "cutting (the shim) so that it does not interfere with any SMD components on top of the CPU..."

I actually get into Windows sometimes, and am able to get into the BIOS sometimes. It seems whenever I hear the HDD start, right after Windows loads, and I begin reading MBM-5 (or whatever) and the Prommie just shut's down? It seems to get through the boot-up process (albeit a trubulent affair) but as soon as Windows starts the Prommies shuts down, although at different stages? Could there be too much of a drain on the PSU with the "heater", Prommie, and Tyan Tachyon using another line? It's a 480Watt Antec (8 months old)?

isp
04-27-2003, 08:16 AM
Originally posted by Liquid3D
What's a Power Conditioner ?

A picture of it can be seen in this thread...

http://www.xtremesystems.org/forums/showthread.php?s=&threadid=12109

Nohto
04-27-2003, 08:43 AM
If your Prom. is set to factory default settings, it shouldn't get to -45 degrees. The fans should go to low after the -34 range and the system should boot. I had problems with mine turning off randomly lately, but I think it is the compressor overheating or the fact that I sometimes let it sit idle for too long. I raised the temp that the fans switch to low and so far haven't experienced the problem again. I haven't really stressed it though.

Liquid3D
04-27-2003, 08:27 PM
What processor are you using Nohto? Do you think it's possible for the large copper micro-freezer to make contact with the protruding circuits on the Thoroughbred surface, and it's causing a short/ground?

I beleive the temp, may have dropped that low on the Prometeia, because of poor contact between CPU and Micro-freezer, which might also explain CPU temp at +45C instead of frying. As if there were a partial contact, because I did check it prior to powering up. (I have 10MB of webspace don't know how to post pictures I took) anyway, you know what it looks like when you lift a Heatsink off a CPU, and the thermal paste is compressed right? well it was making contact, but perhaps 3-washers weren't enough, and I need to add more? How manywashers do you have mounted for adequate screw-down pressure?

I also believe the Antec True Power 480Watt may have been overtaxed, because the Prometeia, Prometeia heater (rear cover), and Tyan G9700 Pro are all sharing line. My TDK CD-RW, always "spins" just after boot-up, and I thought I heard it or the HDD working, as the Prmoeteia shut-down? I removed/switched floppy, Tyan G9700 Pro, and TDK CD-RW to my second unit, and am running as few as possible integrated peripherials. Just a Toshiba DVD-CD, a Leadtek Video card, I even moved the Audigy to my other unit, and am going to use nForce2 SB for sound. I'd use my other PSU (Antec again) which is 400Watt because it has a 40A - 5V rail, but it's 12V rail is only 12A, the True Power 480W 12V is 22A, 3.3V - 32A, and 5V - 38A. man am I confused. In afew hours when I awake, I'm going to reseat everything, it's all disassembled ready to go!