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Biostar TZ77XE3 can't enter bios (CMOS fail)

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Anonymous
January 3, 2013 5:45:36 AM

Hi,

So I just recently replaced my Gigabyte Z68X-UD3H-B3 with a Biostar TZ77XE3 because the former had boot loop issues. I didn't reinstall windows, and when I power up the machine, after the splash screen it says "CPU changed. Enter BIOS setup by pressing DEL" (something along those lines), and then under that it says "CMOS fail, press DEL to enter BIOS".

During this time, pressing DEL does nothing. After this screen dissapears, Windows 7 boots normally.

It is just an inconvenience not being able to enter BIOS, how do I fix this? Thanks
a b V Motherboard
January 3, 2013 5:54:21 AM

Anonymous said:
Hi,

So I just recently replaced my Gigabyte Z68X-UD3H-B3 with a Biostar TZ77XE3 because the former had boot loop issues. I didn't reinstall windows, and when I power up the machine, after the splash screen it says "CPU changed. Enter BIOS setup by pressing DEL" (something along those lines), and then under that it says "CMOS fail, press DEL to enter BIOS".

During this time, pressing DEL does nothing. After this screen dissapears, Windows 7 boots normally.

It is just an inconvenience not being able to enter BIOS, how do I fix this? Thanks


Whats your CPU ?
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Anonymous
January 3, 2013 6:07:57 AM

SPEED94 said:
Whats your CPU ?


Oh sorry, I forgot to post my system specs.

Intel i5 2500k @ stock speed
ATI Radeon 5870x2 1GB Crossfired
16GB 1600mhz DDR3 RAM
Biostar Z77XE3, up from the previous Gigabyte Z68X-UD3H-B3
Windows 7 Ultimate 64 bit
1050W HP XW9300 Workstation OEM PSU
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a b V Motherboard
January 3, 2013 6:14:39 AM

Reset your bios settings and if the problem continues then there might be a problem with your bios chip.
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Anonymous
January 3, 2013 6:22:20 AM

Xttony said:
Reset your bios settings and if the problem continues then there might be a problem with your bios chip.


How would I reset my BIOS settings? No keys at that screen do anything.
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a b V Motherboard
January 3, 2013 6:46:36 AM

Remove the battery , short the terminals and replug the battery to reset your bios settings.
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a b V Motherboard
January 3, 2013 6:56:25 AM

Anonymous said:
Oh sorry, I forgot to post my system specs.

Intel i5 2500k @ stock speed
ATI Radeon 5870x2 1GB Crossfired
16GB 1600mhz DDR3 RAM
Biostar Z77XE3, up from the previous Gigabyte Z68X-UD3H-B3
Windows 7 Ultimate 64 bit
1050W HP XW9300 Workstation OEM PSU


Look the previous mobo was a z68 whereas this one is a z77.anyway you better first check for the cmos jumper for at least entering the bios. replace the jumper from 1-2 to 2-3 keep for 30-40 secs and replace it to previous position.be sure to do this with power off.then let us know whether you can get in the bios....
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Anonymous
January 4, 2013 2:18:30 PM

SPEED94 said:
Look the previous mobo was a z68 whereas this one is a z77.anyway you better first check for the cmos jumper for at least entering the bios. replace the jumper from 1-2 to 2-3 keep for 30-40 secs and replace it to previous position.be sure to do this with power off.then let us know whether you can get in the bios....


How would I reset the jumper/short the terminals? Is it safe to do so, or can it make my Windows inaccessible? As of yet, even though I can't access the bios, Windows runs pretty much perfectly after it boots. I wouldn't want it to not be able to boot into Windows after the reset.
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a b V Motherboard
January 5, 2013 10:17:24 AM

Anonymous said:
How would I reset the jumper/short the terminals? Is it safe to do so, or can it make my Windows inaccessible? As of yet, even though I can't access the bios, Windows runs pretty much perfectly after it boots. I wouldn't want it to not be able to boot into Windows after the reset.


Do not worry ...replacing cmos jumpers in the right manner with power off or shorting the battery won't damage your system...personally I suggest to not use the latter technique unless your mainboard is used for a considerable bit of time. Coming to your question...look out for the rightmost end of your mainboard ..there should be 2 jumpers..each only covering 2 of the 3 pins.Do what i said before to the upper jumper.

Understanding from my reply if becomes difficult or you do not find the jumpers in the position i said (mAYBE in some mainboard) google search the topic 'cmos jumper replacement' and you will get lots of visual ideas....Let us know if you are succesful in entering bios.
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January 6, 2013 5:26:17 AM

Having the same issue with an i5-3570. Switched the jumper and it still won't let me get to the BIOS. Replace the battery next then?
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a b V Motherboard
January 6, 2013 5:40:34 AM

thewanderer14 said:
Having the same issue with an i5-3570. Switched the jumper and it still won't let me get to the BIOS. Replace the battery next then?


No first try disconnecting the OS source (HDD/SSD)....Then go for the Battery issue.. Hoping that you did the jumper replacement correctly....
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