BIOS Black Screen

[YuFish]

I have this problem since a year ago, where I'll access the BIOS and it'll give me a black screen. Literally a black screen, nothing else. I can boot windows 7 just fine.

I didn't mind it since I really didn't need to access the BIOS at that time, until now.

I cleaned my PC and decided to pull off my processor and put it back in. When I boot up I'm presented with "new processor installed" and "CPU Fan error; Press F1 to enter Setup", to which F1 leads me to the black BIOS screen.

I did everything that I saw on the internet: plugging monitor to the motherboard output, unplugging gpu, swtiching to an older monitor, reseating the cmos battery (or removing it for 1 minute then putting it back again)--NOTHING, nothing worked. I still get a black screen when I press F1

Motherboard model: ASUS H61MK

Cheers

EDIT: In case you're wondering: yes, all fans are working, including the cpu fan. Everything is working fine except for the BIOS

EDIT2: This started even before I decided to pull off my processor

 

[Paperdoc]

Your BIOS have have been partially reset, but not sufficient to get it working again. Here's a thorough process to try. Before starting, connect your monitor to the video output on the back panel of the mobo (uses the mobo's built-in graphics).

See manual p. 1-6, key #9 on the lower edge of the mobo, for the 3-pin header used for clearing BIOS.
1. Turn off everything, open the case. Disconnect power to the machine. While in there, examine the CPU cooling fan connection to the CPU_FAN header. Unplug and re-plug it a couple of times. The message you received indicates that the mobo is not receiving a fan speed signal from it.
2. Remove the circular battery. NOTE which way is "up" for replacement later. While it's out, you might want to check that it is OK and not worn out. By the way, are you SURE it is in its holder the right way now?
3. See p. 1-23. Go to the Reset pins set. Move the jumper from the "normal" position on the two left pins to the right pin pair, and leave it on there for 5 to 10 secs. Now restore it to the left pin pair. NOTE that it tells you that it must be on that pin pair to work normally.
4. Replace the battery. Close the case and reconnect power. Boot the machine and go immediately into BIOS Setup. If this has worked so far you should be able to enter cleanly. Hint: don't just tap the "Del" key. I always hold it down until the opening screen appears. It is not obvious exactly when to "tap" because you never know when the POST process will get around to checking the keyboard for that.
5. If you get to the first Setup screen, it should be in EZ Mode. Look at bottom right for the prompt to use the F5 key to Load Optimized Defaults. This will ensure that a complete set of default settings is loaded into BIOS. Then proceed to the Exit Menu and SAVE and Exit. The machine will reboot.
6. This will try to boot from the default settings. That may work, or it might fail to find your boot drive. Either way, there are more settings to adjust in Setup. So, reboot again and hold down the "Del" key to get back into BIOS Setup. Now go through and change any settings you need back to your original configuration. You probably need to specify the use of your Video card and to set the boot device priority, at least. When done, SAVE and EXIT, but don't let it complete the boot. Shut it down during the early boot.
7. Open the case and re-install your video card so it can be used, then connect to it. Close up and boot, and it should be working.

 

[Faike]

1) Make sure your CPU fan is connected to the right port. SO MANY PEOPLE plug it in the wrong port.
2) Move the CPU CMOS jumper from the left to the right after 10 seconds. Or remove the jumper completely and just short it with a screwdriver.
3) Don't replace the battery that would probably be more than necessary.

Try this first:

It sounds like you plugged your fans in wrong. Is a chasis fan plugged in a CPU fan port? I know this is an odd answer but I've seen an issue similar to this before and putting a chassis fan on the CPU fan port and putting the CPU fan on the Chassis fan port fixed it for this one PC I was having issues with.
Literally take the plug off the CPU fan, put a chassis fan on it instead, put your CPU fan on a chassis fan port, see if it works. Or unplug the chassis, and keep moving around the CPU fan and see if it works on another port. Could be a weird port. Take out the jumper. These are all things that might work.

Not sure why this works but it has fixed a few computers for me.

If that doesn't work, go into your bios, run optimized defaults, but check your Monitor tab and see if your fans are even being detected.


Update your bios from the website https://www.asus.com/Motherboards/H61MK/HelpDesk_Download/

 

[YuFish]

I'll try that later when I got the time Paperdoc. Thanks

Faike, I'd like to update my BIOS but I can't boot to windows because I'm hindered by the "CPU Fan error" which leads me to the black BIOS screen. I don't think my mobo has a jumper for the CMOS, but I did remove it for about 10sec. My CPU Fan and Chassis Fan have different ports so I'll not be able to mix them up either accidentally or deliberately.

Cheers

 

[Faike]

It just seems like the CPU fan isn't being detected by the computer. Weird things that work to fix it:
1) Rotate your cooler and see if that helps
2) Plug in everything into the CPU fan slots.
All mobos have a jumper. You have to look for it. It's usually near the bottom and it's 3 prongs or 3 with 2 covered with a black jumper thing. You should take a picture of your mobo, your CPU fan plug, or link your mobo model here so it's easier to see what could be wrong.

Here:

https://www.asus.com/support/FAQ/1006064/

You could have the CPU cooler installed improperly. I've had that happen before to me too, the thing just wasn't seated properly.
After pulling up your motherboard, I think this is the issue. It's just not clamped on properly leading to a CPU error. It's getting the voltage it needs from the cpu fan, but the motherboard is detecting that the CPU fan isn't on the CPU properly and is giving you a fan error. Take it off, follow the manual carefully, make sure everything is snug and clamped properly, and try it again. (Also reappy thermal paste).