BIOS setting goes to default

chetansha

chetansha

Juggernaut
Hello, one of my system, amd phenom ii with asus m4a89Gtd pro usb3, am facing issue of bios going to default setting after power loss
I have changed CMOS battery and it was fine for few days. Now the same issue i face after i have switch off psu or have power cut ( no I don't have ups for now)
 
chetansha said:
Hello, one of my system, amd phenom ii with asus m4a89Gtd pro usb3, am facing issue of bios going to default setting after power loss
I have changed CMOS battery and it was fine for few days. Now the same issue i face after i have switch off psu or have power cut ( no I don't have ups for now)
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With older systems, you might need to check if any jumpers got dislodged.
I would check the manual if you have one handy, and I would also check the battery again with a multimeter.
 
Any chance the battery terminals are shorted out causing the battery to discharge very fast? Can you check the voltage of the newly installed battery with a multimeter and also measure the resistance of the battery terminals?
 
Silent47Assassin said:
Any chance the battery terminals are shorted out causing the battery to discharge very fast? Can you check the voltage of the newly installed battery with a multimeter and also measure the resistance of the battery terminals?
Click to expand...
Its probably a EPROM BIOS chip issue. Some motherboard have dual BIOS chip also. Probably the chip is unable to store the modified instructions.
 
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TechUser00 said:
Even without a bad battery it should have turn on. Its probably a EPROM BIOS chip issue. Some motherboard have dual BIOS chip also. Probably the chip is unable to store the modified instructions.
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I don't think OP mentioned anything about the system not turning on, just that the bios settings are getting reset every time the system is powered down from the mains.
 
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