pc chips 811 motherboard problems

[liteonrules]

Ok I have a cheap PC CHIPS 811 motherboard and the bios just won't keep time, it keeps setting itself back to 2002 and then when I boot up to windows xp and as soon as I get to desktop, my computer freezes and goes to a blue screen saying something about memory error check sum but I never get enough time to read as it reboots itself rather quickly. No matter how many times I try to set the right date and time on the bios, it keeps resetting itself back to 2002. what could it be? thanks

[Ian]

Sounds like a dead CMOS battery.

[liteonrules]

i looked at the motherboard and i saw something that looks like a bigger version of a watch battery. is that the cmos battery? and can i replace it with any cmos battery at local computer store or do i need a specific type for that motherboard?

[dodecahedron]

the exact model battery is written in the manual.
and on the battery itself.

[LoneWolf]

Even if the clock/CMOS battery is bad, the memory checksum error sounds like a separate issue. Try swapping out the RAM in your system, or if you have more than one memory module, running only one at a time (booting up once with each) to see if the error goes away, and also create a Memtest86 boot disk (do a Google for memtest86) and test all your memory.

As you said in your opening post, PC Chips mainboards are cheap: both in price and in quality. With this in mind, their capacitors likely come from a pretty low bidder. Unless you have other equally cheap parts in your system, if the RAM tests pass the mainboard would be high on my suspect list of parts.

[liteonrules]

thanks for all your help: the CMOS BATTERY was bad and the MEMORY wasn't compatible. i bought a new battery and KINGSTON memory and now my problems are over. the dates stay the same and no more computer freezing and no more new blue screen error message. thanks