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I cannot unlock the Bios
Hi, I have a problem with a machine that I have for days, and is that I can not enter the BIOS, is locked and do not know what the password, and I tried disassembling and changing the pins, then removing the battery from the bios and turn it on I got that it had restarted, however, continues locked.
I tried updating to the latest version of the BIOS which is MS-A10 and it has not worked either, even the processor fan no longer rotates at high revolutions as before and it gets hot, but without accessing the BIOS I can not change its speed.
Can someone help me? Please
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Posted December 21st, 2022 18:00
I was able to remove the BIOS password and in turn enable AHCI mode.
Well the fan now spins a little faster, however, not like it used to do before.
I will try to do what you say about the battery because as I say this originated from updating the Bios, and while trying to remove the password I removed it for a few minutes and when I put it back on it made 5 beeps and turned on the machine, the beeps were not heard again, but I have not had problems with the time or anything like that
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Posted December 21st, 2022 20:00
Update: Well I ran the Dell diagnostic test and it gave me these results and as you can see the fan RPM is very low, and I remember it should be like 5000+ at max power.
Also while doing it, it came up error along with about 5 beeps constantly and checking I saw that it is the BIOS battery.
So I should change the battery?
redxps630
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Posted December 19th, 2022 22:00
Cpu fan rpm issue is probably due to old cmos battery so first try replace cmos battery with a new battery. After that use motherboard CLR cmos jumper to clear cmos settings.
The motherboard password jumper is located next to the lowest PCIex1 slot. Follow instructions printed on motherboard.