Downgrading my CPU

[Lord Draconical]

Hello, I recently bought a new CPU to test out in a build and it isn't really what I was looking for. My current build is an MSI Z490-APro, Intel core I3 10105f (for a budget build) 32 gb of Corsair Vengeance PRO 3600, and an Nvidia Quadro M5000. the CPU I tested was an Intel core I7 11700K. I used it for a couple days and really didn't see the need for the upgrade as I wasn't seeing a performance boost. I went back and reinstalled my I3 10105f and now my PC isn't booting. It starts the fans and my AIO gives me a readout on temps but nothing is displaying. also, the DRAM light on my board is now on. I took the CMOS battery out for a couple seconds when the PC was unplugged and its still giving no signs of life. I don't have other hardware to test on so I'm a little stuck here. Any help would be appreciated. Thanks!

[bal723]

3 minutes ago, Lord Draconical said:

Hello, I recently bought a new CPU to test out in a build and it isn't really what I was looking for. My current build is an MSI Z490-APro, Intel core I3 10105f (for a budget build) 32 gb of Corsair Vengeance PRO 3600, and an Nvidia Quadro M5000. the CPU I tested was an Intel core I7 11700K. I used it for a couple days and really didn't see the need for the upgrade as I wasn't seeing a performance boost. I went back and reinstalled my I3 10105f and now my PC isn't booting. It starts the fans and my AIO gives me a readout on temps but nothing is displaying. also, the DRAM light on my board is now on. I took the CMOS battery out for a couple seconds when the PC was unplugged and its still giving no signs of life. I don't have other hardware to test on so I'm a little stuck here. Any help would be appreciated. Thanks!

try booting with 1 ram stick, and check the socket for any bent pins during the installation of the lovely i3 10105f

[aren332]

3 minutes ago, Lord Draconical said:

Hello, I recently bought a new CPU to test out in a build and it isn't really what I was looking for. My current build is an MSI Z490-APro, Intel core I3 10105f (for a budget build) 32 gb of Corsair Vengeance PRO 3600, and an Nvidia Quadro M5000. the CPU I tested was an Intel core I7 11700K. I used it for a couple days and really didn't see the need for the upgrade as I wasn't seeing a performance boost. I went back and reinstalled my I3 10105f and now my PC isn't booting. It starts the fans and my AIO gives me a readout on temps but nothing is displaying. also, the DRAM light on my board is now on. I took the CMOS battery out for a couple seconds when the PC was unplugged and its still giving no signs of life. I don't have other hardware to test on so I'm a little stuck here. Any help would be appreciated. Thanks!

reseat the cpu and check to make sure there arent any bent pins on ur mobo. test a single stick of ram, in every slot, make sure the ram is fully in, make sure all the power connectors are in too.

 

Also does your cpu heat up when u turn the pc on?

[Lord Draconical]

6 minutes ago, aren332 said:

reseat the cpu and check to make sure there arent any bent pins on ur mobo. test a single stick of ram, in every slot, make sure the ram is fully in, make sure all the power connectors are in too.

 

Also does your cpu heat up when u turn the pc on?

I genuinely have no idea. Ill have to check when I'm home. Would it be a good idea to take my cooler off to see if it heats up? also, my mobo doesn't seem to have bent pins. ill upload a photo in a bit as I have to get it on my laptop. Ive reseated my CUP about 8 times now so I think its not a setting problem. What about leaving the CMOS battery out for an extended period of time?

 

update, no phots on my phone ahahahah. Ill take some later

Edited March 13 by Lord Draconical

[Dedayog]

15 minutes ago, Lord Draconical said:

Hello, I recently bought a new CPU to test out in a build and it isn't really what I was looking for. My current build is an MSI Z490-APro, Intel core I3 10105f (for a budget build) 32 gb of Corsair Vengeance PRO 3600, and an Nvidia Quadro M5000. the CPU I tested was an Intel core I7 11700K. I used it for a couple days and really didn't see the need for the upgrade as I wasn't seeing a performance boost. I went back and reinstalled my I3 10105f and now my PC isn't booting. It starts the fans and my AIO gives me a readout on temps but nothing is displaying. also, the DRAM light on my board is now on. I took the CMOS battery out for a couple seconds when the PC was unplugged and its still giving no signs of life. I don't have other hardware to test on so I'm a little stuck here. Any help would be appreciated. Thanks!

May want to change the title, as this is a troubleshooting issue.

 

What did you do EXACTLY during the "upgrade" process?  You'll need to touch all those steps for putting the i3 back in.

 

You must have done something beyond just taking the CPU out and replacing it, so if you need to go back as far as rebuilding the entire machine... do so just to make sure that one step you missed is now covered.

[Lord Draconical]

 

1 minute ago, Dedayog said:

May want to change the title, as this is a troubleshooting issue.

 

What did you do EXACTLY during the "upgrade" process?  You'll need to touch all those steps for putting the i3 back in.

 

You must have done something beyond just taking the CPU out and replacing it, so if you need to go back as far as rebuilding the entire machine... do so just to make sure that one step you missed is now covered.

I was planning on rebuilding my machine to throughly put everything back into place. It may help, it may not. We will see in a few hours

[SimplyChunk]

if you installed an 11th Gen CPU in your Z490 board I'm assuming you flashed the BIOS?  Check on the MSi website that the BIOS adding the 11th Gen support deosn't knock out support for the older smaller 10th Gen chips.  I know some AMD BIOS will add support for newer chips at the expense of losing support for older ones.  It might just be a case of flashing your old BIOS back on the board with the 11700 and then doing the CPU swap

[Lord Draconical]

5 minutes ago, SimplyChunk said:

if you installed an 11th Gen CPU in your Z490 board I'm assuming you flashed the BIOS?  Check on the MSi website that the BIOS adding the 11th Gen support deosn't knock out support for the older smaller 10th Gen chips.  I know some AMD BIOS will add support for newer chips at the expense of losing support for older ones.  It might just be a case of flashing your old BIOS back on the board with the 11700 and then doing the CPU swap

I don't think that was the issue, i flashed the bios to the latest revision that supported both 10th and 11th gen chips. The bios version i used ran on the 10105 just fine then i put the 11700 in and no issues. Just going back to the 10105 is giving me issues 

[Dedayog]

7 minutes ago, SimplyChunk said:

if you installed an 11th Gen CPU in your Z490 board I'm assuming you flashed the BIOS?  Check on the MSi website that the BIOS adding the 11th Gen support deosn't knock out support for the older smaller 10th Gen chips.  I know some AMD BIOS will add support for newer chips at the expense of losing support for older ones.  It might just be a case of flashing your old BIOS back on the board with the 11700 and then doing the CPU swap

Which BIOS's did that?  Not something I've seen in the AM4 or AM5 space.

[Lord Draconical]

15 minutes ago, Dedayog said:

Which BIOS's did that?  Not something I've seen in the AM4 or AM5 space.

It was the 7C75v28 revision

[Alex Atkin UK]

17 minutes ago, Dedayog said:

Which BIOS's did that?  Not something I've seen in the AM4 or AM5 space.

AFAIK removing old CPUs only ever happened on AM4, because the platform lasted an insanely long time so the list of CPUs released on the same platform was something like 2-3 times what Intel ever, plus with much bigger architectural changes.  The motherboard manufacturers never figured this would happen so some models used smaller capacity chips which could no longer fit newer CPU microcode.  Also some budget boards which they never intended to include newer support but due to customer complaints AMD added support to these, again leaving the manufacturers with their pants down.

 

Mentioning AM5 is meaningless as that's post this problem and I believe motherboards are using bigger flash chips to avoid this scenario again.  Even if not, its too early to know how long AMD will support this platform and so if history might repeat itself.

[Lord Draconical]

Anyway, i think imma just rebuild the pc, try 1 stick of ram, changing it after each boot process, seen if my cpu gets hot. Ill get back to you guys with updates. Thanks for your help so far!

[hopgop1]

Before you rebuild check the socket for any bent or damaged pins, sounds like a classic bent pin in the CPU socket to me.

[SimplyChunk]

1 hour ago, Dedayog said:

Which BIOS's did that?  Not something I've seen in the AM4 or AM5 space.

It was something AMD had to do because if i remember rightly most of the B450 boards only had 8MB chips so if you look at the pages of these affected boards you'll see the BIOS line bifurcates and some versions will add newer chips and others will retain support for older ones 

[Lord Draconical]

1 hour ago, hopgop1 said:

Before you rebuild check the socket for any bent or damaged pins, sounds like a classic bent pin in the CPU socket to me.

I don't see any bent pins on my mobo. See below

[Lord Draconical]

Any other suggestions? The ram works and has been tested in another pc

[unclewebb]

22 minutes ago, Lord Draconical said:

Any other suggestions?

I know you briefly pulled the CMOS battery. Most motherboards either have a switch or there will be two pins on the motherboard that you need to short out to reset the CMOS. Check your manual. You do this with the battery installed.

[Lord Draconical]

12 minutes ago, unclewebb said:

I know you briefly pulled the CMOS battery. Most motherboards either have a switch or there will be two pins on the motherboard that you need to short out to reset the CMOS. Check your manual. You do this with the battery installed.

Ok, i know where they are. Ill try it out

[Lord Draconical]

Aww shoot! She works! Thanks for the help everyone. I guess the CMOS pins worked. I also dusted the pc, especially the dimm slots and it works. Again, super grateful for the support!

[unclewebb]

1 hour ago, Lord Draconical said:

She works!

That is great news!

 

When you swapped in the 11700K, did you check the Task Manager or CPU-Z to make sure all 8 cores and 16 threads were being detected and used? When you install a different CPU, if it has more cores and threads compared to the previous CPU, it is a good idea to check this. If not all cores and threads are being detected, you need to open msconfig, click on the Boot tab, press the Advanced options... button and clear the Number of processors box. This box should always be clear.

 

After you do this, press OK and reboot so Windows can find all of the cores in your new CPU. 

 

 

When you previously mentioned that the 11700K did not make much of a difference, the msconfig setting is often times the reason why. 

 

Time to do another CPU swap?