Problems with CMOS reset.

JS_Sky

Reputable
Jul 13, 2014
5
0
4,510
I recently bought a HIS R9 270 IceQx2 and tried installing it into my system via the folowing method:

1: uninstalled Intel HD graphics 4600 Drivers for my IGPU and rebooted.
2: uninstalled the VGBA drivers and shut down.
3: unpluged power, mouse, monitor, and keyboard from the back of the case.
4: grounded myself by taping a metal water faucet.
5: opened the case, placed the new graphics card into the PCI-e x 16 port, and connected it to the power supply via 6 pin cable.
6: repluged the power, board, and mouse like normal.
7: pluged my monitor's HDMI cable into the new Graphics card.
8: replaced cace cover and powered on.

And this is where the first a few road blocks occurs. For some reason my monitor is reciving "no signal" from the Graphics card. So I powered down and took the card out, plugged the HDMI into my IGPU and powered on. I had no problems here, the system booted up fine and windows auto installed VGBA drivers for me.

At this point I shut down and reinstalled the graphics card. But this time I kept my monitor in the IGPU amd opened up BIOS after start up. I noticed that BIOS didn't recognize anything in my PCI-e x 16 slot. But I stupidly changed my BIOS to disable IGPU and to look for PCI-e for primary video adaptor.

I saved and restarted the computer, taking the HDMI out from the IGPU and into the graphics card. But alas this lead to failure yet again. The "no signal" still appears when I start up. I replaced the HDMI again but still nothing.

From here I decided to taked the graphics card out. So i did, and found nothing to change. Still "no signal".

I then decided to manually reset bios by some of these methods:

1: moved jumper from pins 1 & 2 to 2 & 3. Waited 30 seconds while holding power button to release capacitors. Replaced the jumper and turned on power. No signal.

2: removed battery for 10 min then replaced and still getting no signal.

3: removed jumper completely and started up the pc. I finally got the conputer to recognize the monitor and was shown a prompt. It gave me 4 choices: 1-ignore prompt and proceed as normally; 2-clear BIOS passwords; 3-reset intel AMT to factory settings; 4-clear trusted platform module.

I idioticly pressed 3. It told me to shut off and restart with the jumper in normal (1&2 ) configuration. So I did and nothing still. I tried 1, 2, and 4 aswell but all told me to do the same thing and after I did for each one nothing would change, still just "no signal".

additional info:

1: some redundant steps such as: unpluging the power, grounding myself, and repluging power have been omited for brevity.

2: my primary concern is resetting BIOS but I'm unsure how much I may have messed up.

3: Motherboard type: intel db85fl

4: I can elaborate if you need me to.
 
Solution
to use residual power in a system, you turn it off at the front of the case and leave the psu on. when your ready to short a jumper turn the psu off and quickly do the short.
either short the jumper or short the battery slot terminals for 2-3 seconds only.
to use residual power in a system, you turn it off at the front of the case and leave the psu on. when your ready to short a jumper turn the psu off and quickly do the short.
either short the jumper or short the battery slot terminals for 2-3 seconds only.
 
Solution

Cristi72

Admirable


Hello,

I really hope that you did that CMOS reset while the PSU was NOT connected to mains...
 


how else are you supposed to keep residual power in the system long enough to use it. it needs to be plugged in so the residual power can flow out to the neutral terminal, rather than arcing into you.
as long as the psu is turned off at the wall switch or on the psu block itself, its safe and is in fact the recommended method.
 

Cristi72

Admirable


If the switch cuts the Line and Neutral at the same time, it is safe. However, on most PSU's the power switch cuts only the Line, which is OK only in the countries where you cannot plug the power cable in the wall socket the other way around (as in UK, US, etc.).

Nevertheless, I never ever made a BIOS reset with the PSU still connected to the mains. In most cases, I also disconnected the PSU from motherboard.
 
seriously? how do you reset the bios without any power in the motherboard?. residual current only lasts about 30 seconds from when the psu is turned off on a typical core2/athlon x2 /i series/fx series motherboard...
like i said mate leave it plugged in even if you cant turn it off at the wall you can turn the psu off at the psu. that way your not fighting to get everything disconnected and still have enough time to perform the short.
 

Cristi72

Admirable


You have plenty of power from the BIOS battery. And that residual power is something you want to get rid of, not use it while reset.
 
mate i dunno where you got that from but as far as i know its incorrect. (never come across your method)
you can clear the cmos/bios at the hardware level 3 ways.
1 use the cmos reset button if you have 1
2 short the +/- battery terminals
3 short the cmos jumper
4 removing the battery for 10 seconds

the first 3 require residual power in the motherboard.

the 4th requires no power at all in the system.
this has been the standard way ive done it for the last 25 years or so.
the battery only supplies 3v which isnt enough as far as i know to clear the cmos.
 

Cristi72

Admirable
ONTOPIC: JS_Sky: In the Intel documentation it says to wait one hour before you put back the battery in its socket. If still not working, please try a new battery. Otherwise, you have done pretty much you could. What PSU do you have by the way?

OFFTOPIC: HEXiT: My 15 years experience surely cannot match your 25 years experience, but I tend to follow the motherboard manufacturer rules (unless of course they are all wrong and have copied each other the same mistake).