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Computer hangs AMD XD2100 SIS735 chipset

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What would cause this system to hang up?

I just installed an EliteGroup K7S5A socket A motherboard with an SIS 735 chipset. On this board I installed a AMD XP2100 processor. And 512MB SDRAM. I flashed the BIOS to the latest Rev.

If I set the CPU PNP setting to 133/133, the appropriate setting for the 2100 chip, The computer will hang up. If I set to 100/133 the PC runs normally. The highest observed temp for the CPU has been 54C, I believe that is well with in the range for normal operations.

12 replies

by cg it

there are a number of causes, some which could be hardware related, some software. Please specify where in the boot up order the system hangs and what operating system you are using.

by thechas

Okay, the system boots if the FSB is set to 100.
What is the multiplier set to?

For an XP 2100, the CPU speed is 1733MHz, so the multiplier for a 133MHz FSB should be 13.
For the 100MHz FSB, the multiplier should be 17.3.

Unless the SiS chipset does implement the clock double for SDRAM (this usually only applies to DDR RAM), then the multipliers would be 1/2 of the above to acheive 1733MHz.

Chas

by Member 36022913

Here is the vital information I should not have left out.

The os is Win 2000 and the hang up is while running any given application. It has never failed to boot. Just when I am running something like IE, Word, Explorer.

by Member 36022913

The CMOS does not specify multiplier. It only allows a setting for what they call CPU Speed which is a choice of 100/100 or 100/133 or 133/133. I will have to look when I get home to refresh my memory of the other items displayed on that screen.

by Member 36022913

Closing the question because I found this answer on K7S4A bulletin board
http://pub65.ezboard.com/fk7s5amotherboardforumfrm10

- thanks for your help

K7S5A and 2000xp same problems
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I had the same 2000xp and the same problems. I run W98SE. The pc would run ok at 100/100 but at 133/133 it crashds and froze and was unusable. I also got occasional cold boot ?checksum bad? with lost cmos. I read loads of postsand did the following things, in order of listing. None of them made one bit of difference
1. Chipset heat sink removed and replaced with conductive paste and super glue.
2. I had 2 strips of 256sdram. I tried one only, swapping which I used, and I swapped their positions.
3. I installed a single strip of 256 Dram, and it is still there.
3. I swapped the ATI Radeon VE 7000 for an Nvidia Riva TNT model 64 with 32mb.
4. I used a better cooler and got the cpu temp down from about 58C to about50C.
5. My psu was rated at 350 watts but only 15 amps on the 3.3v line. I put in a 420watt rated at 28amps on the 3.3 volt line, 35 amps peak.
6. I removed the modem and left it out.
7. Took the side of the pc case off and left it off, reducing case temperature.
NONE OF THESE THINGS MADE ANY DIFFERENCE TO THE PROBLEMS.
Then I read a post by DaVinci. He said that the drivers supplied on the cdrom with the board are crap and to download the latest drivers, but only to install the AGP port driver, going via device manager and update driver, NOT using the setup route. He also said to download and install the latest drivers for my Nvidia Riva TNT card. I did both of these things, following his instructions. The pc now runs at 133/133 withabsolutely no freezes or crashes and I am totally happy with it,. . .

by csmith

Another case of this problem.
Interesting, how you troubleshot it.
This is not the only MB manufacturer with this problem.
You forgot to close the question.
Regards, Chris

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