Solved Keyboard dosen't respond.Can't enter BIOS

November 30, 2017 at 09:55:48
Specs: Windows 7, AMD Quad core 2,8gz 4G ram DDR3
Good evening everyone,
At first i have to say that i've already check the forum for answers but nothing for my issue.My computer restarted several times(i had some power issues) and came back with three lines of dialogue where i couldn't use my keyboard to select or enter windows. I decided to reinstall windows when i realised i can't enter BIOS with USB keyboard neither ps/2 keyboard. Furthermore i took my HDD to my older pc in order to try with other configuration, but same problem ocurred, and to drive me insane now i can't enter bios on both mt PCs. I tryied to remove motherboard battery, and to use only one keyboard(ps2). I don't know what to do more. Please help me if you can.

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✔ Best Answer
December 1, 2017 at 06:52:54
The manual for that motherboard states the following: "USB Legacy Function
Allows USB keyboard to be used in MS-DOS. (Default: Enabled)".

So, I suggest you clear the CMOS while the computer is unplugged. That should reset to the default setting which should allow you to use a USB keyboard to enter the BIOS. Use one of the BACK USB ports.



#1
November 30, 2017 at 14:25:02
Your post is confusing. That said, you should be able to enter the BIOS screens when using a PS/2 keyboard. Are you tapping the correct keystrokes? If your computer is a home assembled unit you should be tapping the Del key continuously at startup. DO NOT have the Windows installation disk in the drive at this time. Once in the BIOS check the settings for the correct date and time plus the boot order. Boot order should be CD first then the hard drive you wish to use, if more than one installed. There should also be an option to ENABLE legacy hardware. That will allow you to use your USB keyboard and possibly your mouse.

You most likely can't boot into Windows using a hard drive that came from a different computer.

Please clarify what you are doing exactly.


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#2
November 30, 2017 at 16:59:30
I can't enter BIOS even with my ps/2 keyboard wich seems to work, it has green light when computer is running, and i put it in the right port(purple). I am tapping the right key for BIOS setup, this is not my first time doing it. I'm starting to think this problem could be from the motherboard, as i said in original post problems started after some low power issues.

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#3
November 30, 2017 at 20:05:16
Assuming you are using a PS2 keyboard rather than a USB keyboard with an adapter.
Assuming that the keyboard is a good one and not one that should have been chucked years ago.
Google your brand PC or brand motherboard and add the phrase 'key to enter BIOS set up' and you will confirm you are using the correct key.
Note that power issues including both power spikes and power drops and fluctuations can damage hardware including the motherboard, hard drive, graphics cards, power supplies, and possibly the CPU as well.
After the second problem caused by power (and this is NYC which historically has little power fluctuations), I have always used a UPS (battery back up) on my desktop computers to eliminate this problem.

You have to be a little bit crazy to keep you from going insane.


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#4
November 30, 2017 at 22:12:15
Did you connect that PS/2 keyboard while the computer was running? If so, you may have damaged the PS/2 port.

What key are you tapping and what brand computer do you have?


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#5
November 30, 2017 at 23:39:36
Indeed I connected the ps/2 while computer was running, it may caused some damage. The motherboard is a Gigabyte A55M-DS2. I entered BIOS several times before, I just have to assume that i may damaged the ps/2 port
P.S. I had seriously power drops(PC restarted 2-3 times per hour) so it may be a hardware problem, I'll check the components one by one to find out, I'll start with the motherboard and i will let you know.

message edited by Daremith


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#6
December 1, 2017 at 06:52:54
✔ Best Answer
The manual for that motherboard states the following: "USB Legacy Function
Allows USB keyboard to be used in MS-DOS. (Default: Enabled)".

So, I suggest you clear the CMOS while the computer is unplugged. That should reset to the default setting which should allow you to use a USB keyboard to enter the BIOS. Use one of the BACK USB ports.


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#7
December 1, 2017 at 07:44:05
I'll do that first thing tomorrow and I'll come with feedback.

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#8
December 1, 2017 at 09:07:21
PS/2 devices are not hot swapable and won't be recognized until you power down then turn it back on. Perhaps you just didn't try it from a powered off state?

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#9
December 1, 2017 at 20:07:15
Good point THX. The port may still be OK, but the USB should work anyway if it wasn't disabled in the BIOS. As stated in #6 above. Clear CMOS and upon startup immediately begin tapping the Delete key to enter the BIOS screens.

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#10
December 5, 2017 at 04:44:43
I'm sorry for being this late with feedback, but finally my problem is solved. For some reasons if the motherboard's battery is dead, or too weak, your legacy port won't work at start, they're somehow rely on that tiny 3V battery. I would like to thank you all for respond to my thread. With every answer i have been reading i was getting one step closer to the end, I really apreciate it, thank you. I hope my feedback will help others too, and i would ask a moderator to close this thread, problem solved.
Best regards,

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