Set up fresh MOBO and CPU components, but no video output detected and no visible post.
Set up fresh MOBO and CPU components, but no video output detected and no visible post.
Hello there, welcome! I’m new around and need some guidance. I recently bought a MOBO and CPU, but after installing both, I’m facing issues with video output and am confused about whether my system is booting correctly. I can’t see the BIOS screen or confirm any signal. The machine powers on, the MOBO display lights come on, fans spin, and the drives activate, yet there’s no video. I’m worried about the processor—does it work properly, and if not, what should I do?
The specs I have are:
- ASUS ROG STRIX Z690-F gaming MOBO
- Intel i3 12100
- 2x16 GB Corsair Vengeance 5600 RAM
- Thermaltake SMART SP-600AH2NKW 600W PSU
- NVIDIA RTX 3060 GPU
It’s clear these components are quite different from what I used before, so they might not fit together. I didn’t modify the BIOS before installing anything; I just removed the old parts, connected the new CPU and MOBO, and tried to boot up. When I read that this wasn’t the right procedure, I attempted a BIOS update via the MOBO’s flash drive or reset button, but still no improvement.
I’m testing via the GPU’s HDMI output (and tried the CPU’s too), but nothing shows up. I’d really appreciate any advice—this investment of over $400 is significant, and I’d rather fix it myself than take it to a store.
Thanks for the update. The outcomes remain consistent regardless of adjustments. I'm still experiencing power delivery to the machine, cosmetic lighting on the MOBO, and spinning case fans (excluding the CPU fan), yet no signal reaches my monitors. It seems like a BIOS-related problem, based on what I've observed so far. EDIT: I didn't mention earlier that reverting to the original setup restored game performance, dropping FPS across all titles.
You're asking about the dimensions and setup for your new motherboard. Did you confirm the standoff positions match your previous model? The BIOS doesn't need an update. The 12100 comes with support right away. Early DDR5 systems might have issues, but a BIOS fix can help in some cases. The CPU fan should always run, usually spinning at full speed—check if it's connected to the fan header. The Z690-F has two 8-pin EPS 12V connectors; your PSU likely only has one. You mentioned a single 8-pin plug is enough, but it doesn't specify which side is better unless labeled. DDR5 boards often take longer to boot than DDR4, so the fan speed remains a concern.
Thanks for your response. It seems MATX might be a specific software or tool you're using. My earlier motherboard was an Asus Prime B250M-A with an i7 7700 processor. That chip is much smaller than the i3 I bought, so I didn’t think it would fit well in the new MOBO. I was worried the 12100 wouldn’t start right away, just like you mentioned. I figured it wouldn’t work and might even harm the board. I thought the 13th generation CPU should be fine with this setup. Yes, the fan connects properly to the slot on the MOBO, but it never spins during my attempts. When I return the parts to their original state, the fan works perfectly. I was also unsure about the 2x8 pin connection, as I didn’t realize it existed when purchasing these components. I feared my PSU, which only has a single 6+2 connector, wouldn’t provide enough power for the CPU since it leaves an empty 8-pin slot. I thought that might be the issue. However, all my research suggests only one 8-pin slot is needed, and the extra pins are just for heavy overclocking. I’ve tried running both sets at once, but nothing changes.
MATX refers to a motherboard type that sets the dimensions and affects screw placement. Some MATX boards include a screw at the bottom right corner, which doesn’t match the standard ATX layout. Keeping this protrusion in position might lead to short circuits or other harm to the board’s underside. The image provided shows this configuration: https://commons.wikimedia.org/wiki/File:...nsions.svg It's likely the original cooler from the CPU packaging. Avoid altering it.
My previous board was a micro ATX, which has led to some challenges since the new setup occupies the entire space of my tower, leaving no room left. I had to rearrange cables into new positions. The fan I’m using now is the original one that came with the i3 processor I purchased. I considered attaching the old working fan to the processor, but I’m hesitant about making changes without proper advice.
They likely adjusted the size for 1700; if the maker doesn’t confirm compatibility, I’d skip it. The CPU fan should definitely be running. Could you send a photo of the inside of the PC? That circuit board is quite large as well.
In my research it seems others have noted their CPU fans weren’t working either. This looks like a typical sign the system isn’t responding, at least from what I understand. I’ll be able to capture images soon; the machine I’m using for this is the same one I’ve been trying to upgrade parts on, so I’ll need to reinstall and switch to a laptop for better results. I’m fine with that change, thinking it’s necessary before making another hardware swap (since currently I can’t use this computer with the new components).