I couldn't have said it better myself, it's a *&%$# board that drives you crazy with crashes every hour or so and sends my phone bills and blood pressure through the roof, and all the garentees on the board were worthless in getting it fixed or your money back. You know, it's the softwares fault. Only my board is a n M577 with an IBM cyrix base when it was supposed to be a celleron. Carpetbaggers return.

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one of those funny things in life sent to test us I think. Since I have been running a pc100 m590 with a k6-2 400 for over a year now including ....189 crashes I consider myself experienced and versed in m590 speak....it's KAK !!!!!!!!!!!!!! however this will make a reader smile. I overclocked it on the 75mhz bus setting and 5.5x with 2.4v core and it runs delightfully with far fewer crashes.. I'm still going to get a dual Abit though asap.....

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I found this on a search for BIOS info on the pcchips m577, as I was wondering if I could use a faster k6-2 chip with this motherboard. I know that the CPU voltage has to be set up right when clocking the bus and multipliers, or it will result in crashes or unstable activity. The K6-2's run at 2.2v from about 266 mhz up to the 400's, then goes up to 2.4v for the 450's and 475's, then back down to 2.2 for the 500's and 533's, then up to 2.3 for the 550's. If the voltage is set too high or too low, it will result in system crashes, errors, and/or won't boot. All kinds of crazy things can and will happen. Also, make sure your system has adequate case/cpu cooling, since the computer will crash or run unstable if it gets too hot (but might run fine for a while until it overheats). Another thing is that the drivers for the m577 are for windows 95, and there's an issue with the IDE channels not working unless there's two IDE devices on the same channel, i.e., a master/slave setup such as the HD and cdrom being on the same cable. It won't boot up at all if you just have the HD on one and the cdrom on the other. Crazy, but that's the way it works. Hope this helps.

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hello I have a Pc100 mainboard version m598 and I have to say that things are not getting better. I can install win98 and have done so many times. The problem is when it finishes it always comes up with a register problem. I have tried different power supplies different versions, windows, cpu's, ram you name it. If anyone have a solution please e-mail me at d_macd@hotmail.com.

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I have had the PCChips M590 since last August. Perhaps I was lucky but I can count the number of times this thing has crashed on one hand, most of which were when trying to pull off my overclock. First thing I did after getting the board was get the December 1998 BIOS release for it. The version of this board I have has the 8MB onboard AGP video. After that I immediately set it to 90x5 on my K6-2 400, a 50mhz overclock. That worked fine, and I installed Win98 without hassle. For RAM at the time I have 48MB of generic PC100 SDRAM, currently I have 256MB both of which are Siemens PC100 DIMMs. In January I decided to clock it at 495mhz 90x5.5. I had a few crashes doing this until I upped the CPU voltage to 2.7 volts. I cannot see any one component that would cause any unstability in the board that I would recommend anyone avoid, my guess would be to use good RAM and remember the 100mhz setting of the M590 is actually 90mhz, so set your multipliers accordingly to achieve the proper speed for the CPU.

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Similar problem. I installed an AMD k6-2-550mhz (in a Windows ME environment). Clock speed 100 mhz and multiplier of 5.5. This resulted in continuous crashes. Once I reduced the mutliplier to 5, with the resulting 500 Mhz, all was fine. This may also be because the voltage is then closer to what AMD specifies: AMD specieis 2.3V for the 550Mhz cpu, with a lower and upper limit of 2.2 and 2.4V respectively. AMD only allows you to run the board at 2.2V - the lower setting. There is no 2.4V setting and that may eb the reason as well why the cpu and board get out of sync. I have had this problem before with motherboards outfitted at their maximum specs (e.g. fastest combination of bus speed and multiplier).Of course I paid for a 550 Mhz cpu, not for a 500 Mhz, and I expected to get the 550 Mhz improvement. Then agian, a 500 Mhz might have to be installed at 400 Mhz, who knows?

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