Hi Guys, I have a PC I built this past Christmas 2017, with an i5-6600k. Recently, it hasn't been performing as well as I would like, so I bought an i7-7700k.
Corsair 750D case
Asus Tuf Mark 1 Z270 motherboard
i5-6600k processor UPGRADING to i7-7700k processor
Corsair H100i AIO liquid cpu cooler
Corsair LPX Vengeance ddr4-3000 memory
Samsung 256 GB SSD boot drive
Samsung 500 GB SSD games drive
Seagate 3TB HDD storage drive
EVGA 1080GTX video card
EVGA Supernova G2 850W Gold 80+ power supply
Today, I installed the i7-7700k with relative ease. I also invested in some new thermal compound https://www.amazon.ca/Thermal-Grizzly-Conductonaut-Grease-Paste/dp/B01A9KIGSI for the new processor. While thermal-pasting the processor, a micro drop of paste landed to the left of the processor cage on PCB with no visible solders, I cleaned it up.
I reset the CMOS, by shorting the two pins on my ASUS TUF MARK 1 Z270 board marked CLRTC RESET, as per my manual. After this, I plugged the power back in, turned on the PSU, turned on the PC. Booted, turns off after 1 second, boots again but never posts. Try booting again, but it just never posts, it doesn't turn off after 1 second or anything. I have one monitor in the onboard slot, one on the graphics card, just in case.
Reset the CMOS again, this time by taking out the battery, then shorting the two pins for 5 seconds, putting the battery back in. Plug in the PSU, turn on the PSU, turn on the PC. Booted, turns off after 1 second, boots again but never posts. I have one monitor in the onboard slot, one on the graphics card, just in case.
After some googling, I think whats happening is the BIOS tries to load and fails, then tries to load some other configuration. In a panic thinking my BIOS may be too old for this CPU (it wasnt) I decide to flash the latest BIOS using Asus' Flashback port/functionality. I get a USB stick and format it FAT32, download the latest BIOS for my Asus TUF Z270 Mark 1, unzip it, rename it to the appropriate flashing-bios-filename (Z270TUF1.CAP) and put it in the FlashBack port. Turn on the PSU, and hold the flashback button for 3 seconds until it starts flashing, indicating it is flashing the BIOS. The flashing continues for 2 minutes or so, never stopping or changing to a solid light indicating failure/errors. After the flashing ends, I try to boot the PC with one monitor in the onboard HDMI and one monitor in the graphics card, just in case. No post.
So now I think the CPU must be defective, it's the only part that has changed. I take out the new CPU and I check the socket and pins on the motherboard thinking I may have damaged them, but they look fine. I reinstall the old CPU, cleaning it and putting some new thermal paste on. Reset the CMOS, battery method with paperclip short. Turn on the PSU, turn on the PC, it boots for 1 second, turns off, then turns on again, never posts.
Is my motherboard toast? Tomorrow, I'm planning on 'breadboarding' to see if I can get some beeps, but I'm starting to just think the motherboard or bios is to blame--especially since I can't boot with the OLD cpu installed. The 1-second boot, then off, then on again leads me to believe something is wrong with the BIOS and a CMOS reset doesn't 'reset' it enough. What can I do? Flash it again with an older BIOS version?
Any help is appreciated.
Corsair 750D case
Asus Tuf Mark 1 Z270 motherboard
i5-6600k processor UPGRADING to i7-7700k processor
Corsair H100i AIO liquid cpu cooler
Corsair LPX Vengeance ddr4-3000 memory
Samsung 256 GB SSD boot drive
Samsung 500 GB SSD games drive
Seagate 3TB HDD storage drive
EVGA 1080GTX video card
EVGA Supernova G2 850W Gold 80+ power supply
Today, I installed the i7-7700k with relative ease. I also invested in some new thermal compound https://www.amazon.ca/Thermal-Grizzly-Conductonaut-Grease-Paste/dp/B01A9KIGSI for the new processor. While thermal-pasting the processor, a micro drop of paste landed to the left of the processor cage on PCB with no visible solders, I cleaned it up.
I reset the CMOS, by shorting the two pins on my ASUS TUF MARK 1 Z270 board marked CLRTC RESET, as per my manual. After this, I plugged the power back in, turned on the PSU, turned on the PC. Booted, turns off after 1 second, boots again but never posts. Try booting again, but it just never posts, it doesn't turn off after 1 second or anything. I have one monitor in the onboard slot, one on the graphics card, just in case.
Reset the CMOS again, this time by taking out the battery, then shorting the two pins for 5 seconds, putting the battery back in. Plug in the PSU, turn on the PSU, turn on the PC. Booted, turns off after 1 second, boots again but never posts. I have one monitor in the onboard slot, one on the graphics card, just in case.
After some googling, I think whats happening is the BIOS tries to load and fails, then tries to load some other configuration. In a panic thinking my BIOS may be too old for this CPU (it wasnt) I decide to flash the latest BIOS using Asus' Flashback port/functionality. I get a USB stick and format it FAT32, download the latest BIOS for my Asus TUF Z270 Mark 1, unzip it, rename it to the appropriate flashing-bios-filename (Z270TUF1.CAP) and put it in the FlashBack port. Turn on the PSU, and hold the flashback button for 3 seconds until it starts flashing, indicating it is flashing the BIOS. The flashing continues for 2 minutes or so, never stopping or changing to a solid light indicating failure/errors. After the flashing ends, I try to boot the PC with one monitor in the onboard HDMI and one monitor in the graphics card, just in case. No post.
So now I think the CPU must be defective, it's the only part that has changed. I take out the new CPU and I check the socket and pins on the motherboard thinking I may have damaged them, but they look fine. I reinstall the old CPU, cleaning it and putting some new thermal paste on. Reset the CMOS, battery method with paperclip short. Turn on the PSU, turn on the PC, it boots for 1 second, turns off, then turns on again, never posts.
Is my motherboard toast? Tomorrow, I'm planning on 'breadboarding' to see if I can get some beeps, but I'm starting to just think the motherboard or bios is to blame--especially since I can't boot with the OLD cpu installed. The 1-second boot, then off, then on again leads me to believe something is wrong with the BIOS and a CMOS reset doesn't 'reset' it enough. What can I do? Flash it again with an older BIOS version?
Any help is appreciated.
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