Re: bios

Re: bios

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Posted by Henry on January 06, 2002 at 15:47:58:

In Reply to: bios posted by brucece on January 05, 2002 at 16:33:52:

: i have an amd k6 350 mhz 100mhg fsb processor and a super 7 mainboard m598 motherboard. recently i noticed that after i turn the computer on the internal clock that shows in the systems tray is way off.
: i read that this means the internal battery will need to be replaced. where would this battery be located on my motherboard and is it easy to change? can replacement batteries be easily found and if so can they be bought at any store that sells batteries or do i have to get them from the motherboard mfger?(if so, how do i find the mfger)?

: i also read that when the battery is changed, the bios get lost and have to be manually put back.

: will this cause any problems with the computer if the readings are manually replaced?

: thanks,
: bruce

Your M598 mainboard was probably made by PC Chips; you can compare your board with posted M598 info at PC Chips' fastest site:

You can find an unbelievable amount of information for ALL PC CHips products at:

IF NOT a PC Chips mainboard identify the mainboard maker by following the motherboard ID article at:

If your PC boots up with (nearly) the right time and your system clock loses time when your PC is ON - it IS NOT a CMOS battery problem. If your hardware clock loses significant time (much MORE THAN just a few seconds) when the PC is OFF (say overnight or all day or longer) your CMOS battery is weak and should be replaced. If your PC hardware clock IS losing time when it is switched OFF you should write down, on paper, ALL of your current CMOS settings (a good idea anyway - battery WILL fail eventually); all settings will be reset - possibly to strange values - if you remove the battery.

You probably have a coin type CMOS battery in a socket on the mainboard, probably 3.0 volt type CR2032; the 2032 battery is about the size of a US quarter). If so, it will be in a holder and you can snap it out with a thin blade screwdriver or equivalent. When you reboot enter CMOS Setup, autodetect your IDE devices, choose "optimal" settings, save and exit. Let the system boot up and if it is working OK reboot, re-enter CMOS Sewtup and restore your original CMOS Settings - check them carefully vs the paper copy you have. It always sounds like a good idea to save your CMOS settings to a file on the disk (or floppy) - but HOW do you get to them when you need them to setup the BIOS?

If you cannot find a coin type battery onboard - you MAY have a real time clock (RTC) module with the battery built into the case; some have a picture of an alarm clock on the chip. This could have names like Dallas Semiconductor, Houston Tech, Odin, Benchmarq and a few others. If you do have a RTC chip you will probably need to replace the entire module - if Houston Tech HT12888 - no replacements available but the internal battery can be replaced or wired around (if you have the electronic skills and know how).

I've probably given you information that you won't need - BUT my PC Chips M598LMR Manual does not show either a CMOS battery OR a RTC module so I don't know what you will find on your board.

Good Luck and post again if you run into problems.


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