- Mar 15, 2014
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I think I know what the problem is I just want to check what will happen when I apply the 'fix' as I've never had to do this before.
This bit is just for informational purposes really:-
Win7 Pro GA Z77 MBoard i5-3550 16GB Kingstone RAM MX500 SSD primary drive.
Symptoms: with no previous issues PC now won't cold start by PS/2 keyboard.
Using main power button it boots direct into the BIOS screen with a message that the BIOS has been reset and offers a couple of options.
I try rebooting without altering anything and eventually get Windows diagnostic options when it fails POST at the Windows launch screen. Windows says it can't fix the problems which it 'suggests' are due error code 0x490 system file integrity check and repair failed and may be due to 'unspecified changes to the system configuration' or, elsewhere it suggests it may be due to hardware changes or failure.
I try rebooting again and go into the BIOS (Del) and see some of the few settings I chose had changed including the keyboard start return to the Default=OFF.
Left it overnight and when I tried keyboard start the next day it failed and I had the same BIOS reset warning screen again.
Decided to reset to 'optimized' defaults with the exception of the PS/2 keyboard, shut down and restarted. Keyboard start works but again Windows fails to launch at the same place.
Eventually try Windows Memory Test and then Memtest86 from disc as the only other problem I've had with PC was a bad, secondhand, RAM stick which went bad out of the blue and caused a range of problems. Both the tests showed RAM is perfect, so definitely not the issue.
Right from the start my first thought was CMOS battery failure but my one experience of that with a laptop is that it continued to work using the original default BIOS version. But until I researched a bit I had not realised that type of problem can cause serious Windows boot issues too. In fact there are multiple sources in a variety of forums that say the same thing.
So I'm now thinking that as the MB still has its original CMOS battery which, depending how long it was on the shelves before I bought it, could easily be over 12 years old and that was the age at which the laptop (not replaceable) one went too. Coincidence?
Seems the most likely explanation in this case Y/N? Will there be any problems caused by replacing it?
This bit is just for informational purposes really:-
Win7 Pro GA Z77 MBoard i5-3550 16GB Kingstone RAM MX500 SSD primary drive.
Symptoms: with no previous issues PC now won't cold start by PS/2 keyboard.
Using main power button it boots direct into the BIOS screen with a message that the BIOS has been reset and offers a couple of options.
I try rebooting without altering anything and eventually get Windows diagnostic options when it fails POST at the Windows launch screen. Windows says it can't fix the problems which it 'suggests' are due error code 0x490 system file integrity check and repair failed and may be due to 'unspecified changes to the system configuration' or, elsewhere it suggests it may be due to hardware changes or failure.
I try rebooting again and go into the BIOS (Del) and see some of the few settings I chose had changed including the keyboard start return to the Default=OFF.
Left it overnight and when I tried keyboard start the next day it failed and I had the same BIOS reset warning screen again.
Decided to reset to 'optimized' defaults with the exception of the PS/2 keyboard, shut down and restarted. Keyboard start works but again Windows fails to launch at the same place.
Eventually try Windows Memory Test and then Memtest86 from disc as the only other problem I've had with PC was a bad, secondhand, RAM stick which went bad out of the blue and caused a range of problems. Both the tests showed RAM is perfect, so definitely not the issue.
Right from the start my first thought was CMOS battery failure but my one experience of that with a laptop is that it continued to work using the original default BIOS version. But until I researched a bit I had not realised that type of problem can cause serious Windows boot issues too. In fact there are multiple sources in a variety of forums that say the same thing.
So I'm now thinking that as the MB still has its original CMOS battery which, depending how long it was on the shelves before I bought it, could easily be over 12 years old and that was the age at which the laptop (not replaceable) one went too. Coincidence?
Seems the most likely explanation in this case Y/N? Will there be any problems caused by replacing it?
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