Clear comos / bios

J

jd6158

New Member

CHAINTECH MOTHERBOARD CT-7NJL6


Can clear BIOS. I have disconnected the power moved the jumper to 2-3 for about a minute then back to 1-2 turn back on. I have tried to turn the power off and take the battery out foe a few minutes and put it back in. when I turn the power on CPU fan works the LED flash mode light works on the fount panel. Nothing comes up on the screen. Computer worked fine until I went into the BIOS and changed the system performance from Optimal to Aggressive.
Can any one help me get back into BIOS.

JD
 
Unplug power from power supply, then take the cmos battery out, then press the power button on the case a few times to discharge the motherboard. Wait a few minutes, put the cmos battery back in, attach power back to power suppy, try booting computer.
 
johnb35 said:
Unplug power from power supply, then take the cmos battery out, then press the power button on the case a few times to discharge the motherboard. Wait a few minutes, put the cmos battery back in, attach power back to power suppy, try booting computer.
Click to expand...

Tried that doesn’t work.. I have removed battery used the jumpers Remove and cleaned CPU.. Let the motherboard set over night without the battery
Nothing works so far.
 
This may sound stupid, but are you sure you moved the correct jumper, and from the correct jumper position? You should only have to move it for 10-15 seconds depending on the motherboard, but there are usually a few jumpers on the motherboard so it can get a bit confusing.
 
MacBook said:
This may sound stupid, but are you sure you moved the correct jumper, and from the correct jumper position? You should only have to move it for 10-15 seconds depending on the motherboard, but there are usually a few jumpers on the motherboard so it can get a bit confusing.
Click to expand...

Yes. Book says It is Jumper #1 I moved jumper default 1-2 to clear COMAS data left it there for a couple minuets then back to the default 1-2.

This is why I am having the problem, I went into the BIOS setup (FREQUENCY/ VOLTAGE CONTROL) and changed 160 MHz to 200MHz and changed the CPU Interface from Optimal to Aggressive
Now all I get is a blank screen. I cannot clear CMOS
JD
 
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