CMOS Bios Reset Not Fixing Issue

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ajaz.elahi

Feb 14, 2018
32
0
40
I've got the MSI Z170A motherboard and I changed the BIOS settings, saved & exited which resulted in the system booting up but not displaying anything on the monitor. The monitor light would remain orange, to say there was no signal from the motherboard.

So i removed the CMOS battery for 5minutes, refitted it and it presented a screen saying Press F1 to enter Setup or F2 to continue. I pressed F1 and entered Bios setup, where I made following configurations as follows:

PEGO - Max Link Speed: [Auto] > [Gen2]
PCI Latency Timer: [32 PCI Bus Clocks] > [96 PCI Bus Clocks]
Above 4G Decoding: [Disabled] > [Enabled]
Restore after AC Power Loss: [Power off] > [Power on]

Saved & Reboot... now the monitor is not getting a signal from the mobo to turn on, so the light on my screen stays orange instead of switching to green when I power on.

I've tried removing CMOS battery again (no difference).
I've tried jumping JBAT1 with a screwdriver for 5-10 seconds as per manual (no difference).

I've got the GPU on a PCI-E Riser... I've swapped out the riser and cables in case they were faulty but still no difference.

I'm not sure why the BIOS settings above have had this affect but can someone advise how I can reset this?
 
Solution
Chicano
User BIOS settings are supposed to be removed with a reset but that doesn't always work specially with only 5 minutes allowed for the reset.

I've read sometimes as long as 1 hour and even overnight are necessary so my conclusion is that the 5 minutes you allowed were not enough.. Switching the BIOS jumper between pins along with the battery removed for 10 minutes, plus pressing the start button to deplete power from the mobo capacitors should do it.


Follow this reset procedure exactly.
1. Remove AC power or turn off the PSU
2. Remove the battery
3. Move the BIOS jumper to pins 2 & 3
4. Press and hold the power button for 60 seconds
5. Wait 10 minutes
6. Revert 1 through 3 and try the computer
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Chicano

Chicano

Judicious
Aug 29, 2011
5,071
29
35,490
User BIOS settings are supposed to be removed with a reset but that doesn't always work specially with only 5 minutes allowed for the reset.

I've read sometimes as long as 1 hour and even overnight are necessary so my conclusion is that the 5 minutes you allowed were not enough.. Switching the BIOS jumper between pins along with the battery removed for 10 minutes, plus pressing the start button to deplete power from the mobo capacitors should do it.


Follow this reset procedure exactly.
1. Remove AC power or turn off the PSU
2. Remove the battery
3. Move the BIOS jumper to pins 2 & 3
4. Press and hold the power button for 60 seconds
5. Wait 10 minutes
6. Revert 1 through 3 and try the computer
 
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Solution
A

ajaz.elahi

Feb 14, 2018
32
0
40


Hi Chicano

Thanks for replying.
I tried the above and it's still the same. Mobo powers up, fans spinning, keyboard lights up and mouse lights up but nothing happening on the screen.

I've just tried connecting the GPU directly on the motherboard, eliminating pci-e risers and adapters... but still no joy.

I hope I haven't damaged something beyond repair, it was all brand new this morning :( lol
 
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jr9

jr9

Estimable
Dec 6, 2017
2,212
3
3,960
Shutdown, physically remove any graphics cards or risers completely, hook up the display to the motherboard, and start up again. Make sure all connections are good and the monitor is connected on the monitor end.

If you did a BIOS reset then the changes you made should be cleared.
 
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A

ajaz.elahi

Feb 14, 2018
32
0
40


Thanks I was about to try this but then decided to connect my monitor to the GPU DVI ports instead of the motherboard DVI port and behold... one of the ports on the GPU does allow the monitor to come on.

The other port on the GPU + the port on the motherboard do not allow monitor to come on anymore... I have no idea why.

Could this be a setting issue - I checked Bios and it did successfully restore back to default but the issue remains when connecting monitor to Mobo dvi.
 
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Chicano

Chicano

Judicious
Aug 29, 2011
5,071
29
35,490
Sounds like it's either:
1) the BIOS Video source selection setting may be on PCie and you may have to manually change the setting to onboard graphics...
2) or it's a driver issue; If the GPU has both DVI-I (analog & digital) and DVI-D (digital only), and only either DVI-I or DVI-D works it's possible the other port's driver was uninstalled... some drivers get automatically uninstalled when you install another driver for the same device and if the PCI Latency overclock caused the GPU failure, the GPU may have auto uninstalled and reinstalled on the other DVI port. You should reinstall the GPU drivers. For onboard video display try installing the video drivers (included chipset if included) from the motherboard CD/DVD disk.
 
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A

ajaz.elahi

Feb 14, 2018
32
0
40


Did this a second time and worked like a treat. have had to reset it a few times and has always worked.
 
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