If you get a bios checksum error its usually time to replace the battery. So the rule is, if the bios is working right and you dont get an error message then the battery is ok. I dont bother as they are only $1, i just toss it and use another one. That is, unless you bother to check the voltage under load. If you replace the battery and all is well only then you know the battery is bad. So while its good to check the voltage that doesnt mean the battery is in working order. That means when they are in use and power from the battery is called for, they then cant hold their charge and dip below the 2.95 level. That is because they lose their power quickly "under load". But the problem is that you can check them with a multimeter and they read 3 volts or close to that and they dont work right in the pc. They run at 3 volts and will work from about 2.95 and up. So i take my chances at the $1 store and they have a pretty good record for working properly.Īnother thing is checking the voltage. It costs $2 in gas to go to the computer store to change a bad battery that i paid $5 for. I figure if i am going to take a chance i might as well only spend $1. Thats why i started buying them from the $1 store near me. And i have bought new batteries for $3 to $5 from computer stores that were either no good or died real quick. You know, i have taken batteries out of P133 and p166 systems and they worked fine in modern systems. Never have I received this "CMOS Checksum Error" before. Just a note: In the past, when I would reboot my PC, it would not load up the initial screen and it would just give me beeping sounds, but after unplugging and plugging it again 3 or 4 times, it would eventually load up. I haven't tried changing my CMOS battery yet, and I'm planning on buying a couple of new IDE cables just in case. Now it went back to just giving me beeping sounds and no screen. Tried switching them around, changing IDE cables, leaving just 1 master HDD, and nothing happened. I also saw that the date was set to september 2003 and the time was wrong. I went into the BIOS setup and couldn't see my HDDs. Well F2 didn't work cause the system wouldn't recognize any of my drives. I got the error "CMOS Checksum Error" and if I pressed F1 I'd go into the setup, if I pressed F2 I'd go and load up default settings.
System cmos checksum bad windows#
Then I tried unplugging it and plugging it back up and after a couple of tries and changing some IDE cables around, taking out the CD ROM (only leaving my HDDs), the screen loaded, but it wouldnt boot Windows XP.
Then I tried to reboot but it would just give me some beeping sounds and the screen wouldnt load up, so I couldn't get in the BIOS.
System cmos checksum bad Pc#
Last night I was using my PC fine and suddenly it froze and gave me a blue screen indicating an error had ocurred in the system (dont really remember everything it said in the screen).
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