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3 Posts
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618
December 26th, 2022 01:00
9020 mouse and keyboard unresponsive after exiting BIOS
9020, build-date 2014-04-30, 16GB RAM, 320GB HDD, Windows 7 Pro, fresh coin cell
Upon power-up pressing F12 on USB keyboard plugged into front USB port brings up BIOS. Running Diagnostics shows both USB keyboard and USB mouse being found. Using keyboard up-down-left-right arrow keys I can navigate the various BIOS menus just fine. Under System Configuration->USB support all 7 boxes are checked. So far so good.
Exiting BIOS then Windows 7 login screen appears. BUT =now= keyboard and mouse are unresponsive. NumLock LED on keyboard is lit so power is still being applied to keyboard.
This is the behavior after resetting the coin cell. After a few hours, attempting to turn on the unit results in 5-second cycles of "power-up, cpu-fan-on, one-beep, power-down" until I press-and-hold-in the On button in front for 10sec. This should definitely not be happening.
Never have run into this problem before. Ideas?
Happy Holidays,
kerchunk
kerchunk
3 Posts
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December 26th, 2022 23:00
Addendum -
I am trying to replace the SSD drive in the 9020 ( Windows 10 installed) with the HHD from my 9010 ( Windows 7 installed) . Hardware-wise the swap is easy, but while USB keyboard and mouse are usable in BIOS they are not once Windows 7 login screen appears so I cannot type or move the cursor. Swapping the SSD back into the 9020 and all works again. One thing I noticed is the 9020 BIOS is the Drive setting is set to RAID-0 -- cannot tell what the 9010 BIOS says as its power supply is dead but I doubt it's set to RAID-0, more likely ATA. But none of this should affect the keyboard and mouse being detected as that occurs before the OS starts loading.
So what is the trick?
Happy Holidays,
kerchunk
redxps630
11 Legend
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16.1K Posts
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December 27th, 2022 06:00
Win 7 hdd swap from one pc to another of different model is problematic. Win 7 is also known of lack of USB driver support during installation. When you swap hdd from one pc to another, it is basically like Win 7 has to enter a new hardware setup stage again which it seems to have failed. background info: installing OS on a pc involves two stages: first stage is installing all the system files from dvd to hdd, after a restart, newly installed OS begins to adjust its settings according to the new hardware of pc, finding appropriate drivers for the hardware it detects. So when you move a Win 7 hdd from another pc to 9020, it has to do this second stage of setup again.
Re: I am trying to downgrade from Windows 10 to 7
try back up old data on hdd then do a clean Win 7 install.
bradthetechnut
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December 27th, 2022 15:00
9020 BIOS should be set to AHCI as long as that's the mode the Win7 drive was loaded in. If AHCI doesn't work, you can certainly try ATA.
If Win7 was still supported, you'd be able to use Dell Support Assist to automatically download the correct drivers - chipset, graphics, etc. But with Win7 not working with keyboard & mouse, that's also a problem as we know.
It looks like about the only luck you'll be able to have is changing the BIOS settings. I don't know if different keyboard & mouse would work with Win7 in its current state or not.
A few years ago, I took a Win7 HDD from my previous 755 and put it in a 790 I used for backup and to run software 64-bit Win10 won't. Support Assist fixed everything.
rideredu11
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2 Points
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May 13th, 2024 16:21
I have 2 Dell Optiplex 9020's in the office and both suddenly refused to accept the plug in keyboards. Only USB works now. Did your updates kill my keyboard?
bradthetechnut
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May 14th, 2024 00:37
To clear up any confusion: "Only USB works now."
You say USB works. Are your keyboards PS/2?
"Did your updates kill my keyboard?"
The use of the word "your" implies you're trying to ask Dell directly. This is a user to user forum. Dell hasn't rolled out any BIOS updates for the 9020 for a long time. I did just get thru a Windows update that was problematic unrelated to your keyboard situation.
If they're 5+ years old, try replacing the size 2032 CMOS battery and see if the 9020 recognizes the keyboards again.