CMOS not clearing

[BlackHat2000]

So I'm trying to Clear a BIOS password that was set on my computer a good while ago and I've removed the battery, didn't work, switched the jumper, didn't work. Any ideas?

[just_dave]

Follow the manual, but you need to turn off the PSU, bcoz even when the PC is off, BIOS memory circuit gets power from PSU.

[BlackHat2000]

Just now, dave_k said:

Follow the manual, but you need to turn off the PSU, bcoz even when the PC is off, BIOS memory circuit gets power from PSU.

Was completely unplugged.

[Master Disaster]

Not all BIOS passwords can be cleared with a CMOS reset although most that can't are usually specialised.

 

How long did you leave the battery out for?

[BlackHat2000]

3 minutes ago, Master Disaster said:

Not all BIOS passwords can be cleared with a CMOS reset although most that can't are usually specialised.

 

How long did you leave the battery out for?

About 15-20 minutes.

[Master Disaster]

7 minutes ago, BlackHat2000 said:

About 15-20 minutes.

Ok, so it appears your CMOS is capable of saving it's password without battery backup.

 

Sorry.

[BlackHat2000]

Just now, Master Disaster said:

Ok, so it appears your CMOS is capable of saving it's password without battery backup.

 

Sorry.

So, I'm SOL? Lol

[it_dont_work]

What motherboard? I had a hp that'd do something like this had a default bios password after resetting the cmos.

[BlackHat2000]

5 minutes ago, it_dont_work said:

What motherboard? I had a hp that'd do something like this had a default bios password after resetting the cmos.

Asrock Z170 Fatality gaming k4

[Valkyrie Lenneth]

40 minutes ago, BlackHat2000 said:

About 15-20 minutes.

after u unplug u need to hold the powerbutton for around 15-30secs ( u usually hear a click from the psu ) to drain in the remaining power, the remaining power inside is enough to power the bios chip for probably a whole day

[BlackHat2000]

3 minutes ago, Valkyrie Lenneth said:

after u unplug u need to hold the powerbutton for around 15-30secs ( u usually hear a click from the psu ) to drain in the remaining power, the remaining power inside is enough to power the bios chip for probably a whole day

After I remove the battery?

[Valkyrie Lenneth]

Just now, BlackHat2000 said:

After I remove the battery?

ye, holding power button while unplugged drains the power through the psu into nothing usually it flashes ur leds of ur fans too when u do it and a few sec after it clicks ( for me ) can take up to 30sec in some systems tho

 

[BlackHat2000]

17 minutes ago, Valkyrie Lenneth said:

ye, holding power button while unplugged drains the power through the psu into nothing usually it flashes ur leds of ur fans too when u do it and a few sec after it clicks ( for me ) can take up to 30sec in some systems tho

 

Well I restarted my computer, starting getting mem management BSODso I removed the battery, dims, and held the power button. I'm gonna let it sit for the night ( unless that's a bad idea ) and see how it goes in the morning

[Master Disaster]

2 hours ago, Valkyrie Lenneth said:

after u unplug u need to hold the powerbutton for around 15-30secs ( u usually hear a click from the psu ) to drain in the remaining power, the remaining power inside is enough to power the bios chip for probably a whole day

Not at all, that's a complete myth. Assuming the PSU is unplugged (as it should be) there will be no power running around the board and removing the battery is all that is required (in my life I must have reset thousands of BIOSes and not once have I ever held down the power button), besides that OP also used the reset jumper and it still didn't clear the password.

 

Modern ACPI PSUs do not send any power to the board until a power on signal is received.

 

If 20 minutes and using the jumper wasn't enough to clear it then holding down the power button will do nothing.

[BlackHat2000]

Well it looks like im SOL as of this moment. Had the battery removed while i slept and it's still holding the password.

 

Screw it, ill buy a new board lol

[Valkyrie Lenneth]

18 hours ago, BlackHat2000 said:

Well it looks like im SOL as of this moment. Had the battery removed while i slept and it's still holding the password.

 

Screw it, ill buy a new board lol

if u think about a new board u can always try a magnet lol