bootloop after bios update?

[furiousTaher]

ok whoever gave the idea of bios revert- bad idea.

I changed my bios back to an older version- 308 probably(to check my cpu fan error). now its in infinite bootloop if I turn it on. what to do? I can't even see the logo anymore. please help

[VANGUARD]

ok whoever gave the idea of bios revert- bad idea.

I changed my bios back to an older version- 308 probably(to check my cpu fan error). now its in infinite bootloop if I turn it on. what to do? I can't even see the logo anymore. please help

[Cynical]

If you can still access the BIOS then try loading the default profile from BIOS settings. But I assume you can't access the BIOS since you've mentioned that you can't even see the motherboard manufacture's logo on display as your computer enters infinite bootloops before that. I'd suggest you to take out the CMOS battery and let it completely discharge and the reinstall it on your motherboard which might solve the problem.

[furiousTaher]

If you can still access the BIOS then try loading the default profile from BIOS settings. But I assume you can't access the BIOS since you've mentioned that you can't even see the motherboard manufacture's logo on display as your computer enters infinite bootloops before that. I'd suggest you to take out the CMOS battery and let it completely discharge and the reinstall it on your motherboard which might solve the problem.

thanx a lot I hope it works. but do I Hav to do anything with clrtc 2 pins? or just removing battery is enough? also how long I have to keep the battery unplugged ? 2 mins?

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ok I removed battery. and put it back.. now it doesn't bootloop... but display doesn't show ... I have no idea why...

[Swapnil]

You can't enter the bios at all? Removing battery doesn't always work with newer motherboards. You should use the CLRTC jumper. Or if you remove the battery then remove it for at least 20 minutes (not seconds) and keep the computer unplugged during that time.

You might wanna try asus crash free bios to revert back to the bios you were on previously if everything else fails.

If you can enter the bios, but bootloop at the windows logo, try changing the SATA settings between AHCI and IDE.

[furiousTaher]

You can't enter the bios at all? Removing battery doesn't always work with newer motherboards. You should use the CLRTC jumper. Or if you remove the battery then remove it for at least 20 minutes (not seconds) and keep the computer unplugged during that time.

You might wanna try asus crash free bios to revert back to the bios you were on previously if everything else fails.

If you can enter the bios, but bootloop at the windows logo, try changing the SATA settings between AHCI and IDE.

I used the clrtc method too. still no display. I don't Hav bootloop anymore.
I don't know exactly how revert bios works but I don't think I can work it out when no display

[Set]

Assuming you have external gpu card remove it first and then restart the pc with onboard card sometimes gpu driver creates problem
also do check if your old bios verison is corrupted or not this maybe one of the culprit too

[Cynical]

Keep the battery off your motherboard for 12hrs (I know it is overkill but this might be useful) to make sure it is completely discharged, also during this time keep your PSU power button off and unplug the computer's power cable from power outlet.

Strange, why wouldn't the display show anything? Did you properly connect your monitor to your GPU? Also try the on-board GPU just to see if that works. Don't forget to check whether the GPU is powered properly, there might be a possibility of loose power cable connection of your GPU. Best of luck.

[furiousTaher]

Keep the battery off your motherboard for 12hrs (I know it is overkill but this might be useful) to make sure it is completely discharged, also during this time keep your PSU power button off and unplug the computer's power cable from power outlet.

Strange, why wouldn't the display show anything? Did you properly connect your monitor to your GPU? Also try the on-board GPU just to see if that works. Don't forget to check whether the GPU is powered properly, there might be a possibility of loose power cable connection of your GPU. Best of luck.

I don't think it's cmos settings issue... it is probably bad bios issue and I don't think I can do anything with cmos. I reset cmos with clrtc. I also tried crash free bios features. but it didn't work coz no display so I don't think carefree can run

[Fox Mulder]

RMA.

The message you entered is too short and all.

[Swapnil]

I don't think it's cmos settings issue... it is probably bad bios issue and I don't think I can do anything with cmos. I reset cmos with clrtc. I also tried crash free bios features. but it didn't work coz no display so I don't think carefree can run

You have one last resort to try. Replace the bios chip. Almost all modern asus motherboards has socketed chips that you can replace by hand. But you would need to obtain a new one though. Or simply RMA and they will do that for you.

[Arz]

So I guess this signifies the importance of dual bios. Now I can say something to people who told me I overspent on my board.

Btw, I see on tom's hardware that you can order the bios chip on ebay.

update: I guess this is the one- http://www.ebay.com/itm/Bios-Chip-As...0AAOSw8cNUPqnf

[minitt]

ok whoever gave the idea of bios revert- bad idea.

I changed my bios back to an older version- 308 probably(to check my cpu fan error). now its in infinite bootloop if I turn it on. what to do? I can't even see the logo anymore. please help

see if ur board has floppy disk/usb/cdrom blind flash option or not. if it supports any of them, give it a shot.

[Swapnil]

So I guess this signifies the importance of dual bios. Now I can say something to people who told me I overspent on my board.

Technically, Asus's "Crashfree Bios" tries to solve the same problem what Gigabyte's "Dual Bios" does. Just instead of loading the bios from a backup chip, it tries to load from a USB drive. And technically, if the Crashfree bios can fail, so can the dual bios. But from my experience, Asus's Crashfree bios fails almost always. And I know Gigabyte's Dual Bios always works because the only Dual Bios motherboard I had used to corrupt it's bios without any apparent reason and recover it from the backup once every couple of months.

I don't think it's cmos settings issue... it is probably bad bios issue and I don't think I can do anything with cmos. I reset cmos with clrtc. I also tried crash free bios features. but it didn't work coz no display so I don't think carefree can run

BTW, does your motherboard have "USB Bios Flashback"? It can even recover/update bios without a CPU attached, or at least Asus claims that.

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Also, did you thoroughly follow the Crashfree Bios requirements? As far as I remember it requires correctly formatted USB flash drive, correctly named bios file, and sometimes a specific USB port for plugging in the flash drive. Consult your motherboard manual, or see if your motherboard has a separate manual for the crashfree bios usb preparation as mine does.

[furiousTaher]

no asus did not specify any usb port for my mobo. but I know it's 1 of the usb2 port. and Ya I format fat and renamed it.

I gave it to osgs today they said it will take 10 days or more. they don't have the new bios flasher pc they said.

does smart or ucc has bios flasher for msi or gb? can we f up gb or msis b i os and not suffer

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see if ur board has floppy disk/usb/cdrom blind flash option or not. if it supports any of them, give it a shot.

I don't think so (�� at least not on manual no blind flasher or flashback

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So I guess this signifies the importance of dual bios. Now I can say something to people who told me I overspent on my board.

Btw, I see on tom's hardware that you can order the bios chip on ebay.

update: I guess this is the one- http://www.ebay.com/itm/Bios-Chip-As...0AAOSw8cNUPqnf

I thought only gb has dualbios.

thanx for the link anyways. the link I found online was lot more expensive

[Arz]

Technically, Asus's "Crashfree Bios" tries to solve the same problem what Gigabyte's "Dual Bios" does. Just instead of loading the bios from a backup chip, it tries to load from a USB drive. And technically, if the Crashfree bios can fail, so can the dual bios.

Truth be told, nothing is actually failsafe. But I do think that in dual bios where the backup chip is always in read only mode, chances of it being messed up is relatively less, as opposed to crashfree bios which relies on an external device, therefore have multiple points of failure.

And I know Gigabyte's Dual Bios always works because the only Dual Bios motherboard I had used to corrupt it's bios without any apparent reason and recover it from the backup once every couple of months.

That doesn't seem...right....
While it's true that I follow 'Don't fix what ain't broken' and don't update bios that frequently, I've yet to use the backup bios even once. I once switched to it to check if it works, that's it. My cousin's board is also a gigabyte with dual bios, and it seems to be running without issues. Maybe your board was faulty?

I thought only gb has dualbios.

Apparently msi calls theirs "Multi Bios". Same principle though.

[Speed]

there is always a fail safe. in modern motherboards it's almost impossible to know & explain some ¤¤¤¤ that motherboards now-a-days shows up.
the solution is simple, but u have to do EXACTLY what i say. if the following option fails then RMA or manual chip replacement will be ur only option unless u r willing to buy a new motherboard.
1.take the motherboard out of the case.
2.remove everything including cpu.
3.remove the battery.
4.now this step requires a little bit of patience & perfection. for this step you can choose between two option:
A. You can keep the power button switch only & hold the switch for at least 10 mins.
B. You can use a screwdriver & short the power button pins & hold it for 10 mins.
i would recommend you to do the option A.
5.Finally leave the board completely undisturbed somewhere safe for 24 hrs.

hope you will succeed.

[furiousTaher]

there is always a fail safe. in modern motherboards it's almost impossible to know & explain some ¤¤¤¤ that motherboards now-a-days shows up.
the solution is simple, but u have to do EXACTLY what i say. if the following option fails then RMA or manual chip replacement will be ur only option unless u r willing to buy a new motherboard.
1.take the motherboard out of the case.
2.remove everything including cpu.
3.remove the battery.
4.now this step requires a little bit of patience & perfection. for this step you can choose between two option:
A. You can keep the power button switch only & hold the switch for at least 10 mins.
B. You can use a screwdriver & short the power button pins & hold it for 10 mins.
i would recommend you to do the option A.
5.Finally leave the board completely undisturbed somewhere safe for 24 hrs.

hope you will succeed.

damn you are late muntasir bhai i sent it to rma...
next time i will tag u whenever i face a hardware problem...

but are you sure it will work? because i did it except for the fact i didnt remove processor and i pressed the power button only for 20 seconds after removing battery and shorting clrtc pins. but i did it when it was unplugged from main wall current source... but you suggested me to do that while connected to wall socket? :O

[Speed]

damn you are late muntasir bhai i sent it to rma...
next time i will tag u whenever i face a hardware problem...

but are you sure it will work? because i did it except for the fact i didnt remove processor and i pressed the power button only for 20 seconds after removing battery and shorting clrtc pins. but i did it when it was unplugged from main wall current source... but you suggested me to do that while connected to wall socket? :O

no, i didn't told u to do that while connected with live ac supply. 20 seconds may not be enough to for full discharge of all the electricity stored & even after complete discharge u need to give it some significant time to allow it self recovery. i am pretty much sure bcoz i solved at least 5 cases like this example continuous boot looping,no post, weird freeze on bios initialization screen e.t.c.

[furiousTaher]

no, i didn't told u to do that while connected with live ac supply. 20 seconds may not be enough to for full discharge of all the electricity stored & even after complete discharge u need to give it some significant time to allow it self recovery. i am pretty much sure bcoz i solved at least 5 cases like this example continuous boot looping,no post, weird freeze on bios initialization screen e.t.c.

ok so next time if my bios unluckily get busted again i will do that method ( 4c. jumper in power pins... )

but how does that work actually? coz how will asus bios will recover? it has only one bios setup, can it magically revert back to previous bios if i leave it for 24 hours ? :O

also is that the 24 hours time necessary?