CPU upgraded, machine won't boot up HP z420

Toggle sidebar Toggle sidebar
K

klhsx1

Distinguished
Mar 16, 2016
98
0
18,630
Hello,


I purchased a xeon 1650 v2 and installed it in my HP z420 after watching a video on youtube and now the machine starts up, and the fan runs at maximum and won't boot up or display anything on the screen.

I have read that maybe i need to reset the bios?

Any ideas? Much appreciated

Thanks
 
Solution
Barty1884


Yeah, so not supported.



Unfortunately, the time to ensure compatibility is before you buy. Hopefully you can recoup all/most of what you spent on it.



You could pick up a...
Sort by date Sort by votes
K

klhsx1

Distinguished
Mar 16, 2016
98
0
18,630
I put a pea sized blob on the cpu then put the heat sink down on top.

When i removed the cpu to inspect small amount at the corners were not covered. I reapplied compound to the corners and re installed still not working.

 
Upvote 0 Downvote
A

annextboss

Prominent
Aug 23, 2017
5
0
510


so you cleaned the old thermal paste off (with rubbing alcohol)? Your layer of thermal paste needs to be as thin and as even as possible.
I use the business card method. Put your blob in the middle and drag it up, down left right try to make it smooth. Check the obvious first. Connectors and thermal paste.
 
Upvote 0 Downvote
K

klhsx1

Distinguished
Mar 16, 2016
98
0
18,630
I cleaned the old thermal paste off the heat sink contact with rubbing alcohol and let dry.

I did not change the bios.

The chips is compatable and comes in many stock HP z 420's
 
Upvote 0 Downvote
A

annextboss

Prominent
Aug 23, 2017
5
0
510


you can clean both the top of the cpu and the heat sink. And along with what the other guy said, checking if there is a new version of the bios would be my next step.
 
Upvote 0 Downvote
K

klhsx1

Distinguished
Mar 16, 2016
98
0
18,630
The cpu was clean there was no need to clean it. I got it off ebay maybe it doesn't work?

I also broke the tab off the power cable for the CPU fan when I took it out. I could not pull it out, so I thought I had to bend the tab with a screw driver to remove it.
The CPU fan power cable plugs in just fine, but im not sure if this would affect the contacts.

I have not re installed the original cpu yet to see if its working.
 
Upvote 0 Downvote
Barty1884

Barty1884

Retired Moderator
Apr 16, 2015
22,250
1,350
108,740
Looks like the support page has been taken down unfortunately, so there's no easy way to check.

From what I gather, it looks like you'd want boot block #2 in order to support the 1650v2.

You'd need to use the original CPU and boot into the BIOS, there will be a section titled "boot block" and you'd see a corresponding number (or date), and you'd X-Ref that online.

*EDIT* I think you'll see a date.
2011 - only supports 32nm v1 CPU
2013 - supports both 32nm v1 and 22nm v2 CPU

Source: https://h30434.www3.hp.com/t5/Business-PCs-Workstations-and-Point-of-Sale-Systems/HP-Z420-CPU-Supports/td-p/5958255
 
Upvote 0 Downvote
A

annextboss

Prominent
Aug 23, 2017
5
0
510
i was meaning, you said you installed the cpu and got nothing. So there would be thermal paste already applied on both to clean before trying again. Not before original installation. :p
 
Upvote 0 Downvote
K

klhsx1

Distinguished
Mar 16, 2016
98
0
18,630
What can I use it for? I guess I just have to try and sell it.

Can I get a new mother board? Not worth it is it. sigh. Why was this not obvious . I thought all that mattered was the LGA 2011 socket type. Man these things are always so complicated.
 
Upvote 0 Downvote
Barty1884

Barty1884

Retired Moderator
Apr 16, 2015
22,250
1,350
108,740


Yeah, so not supported.



Unfortunately, the time to ensure compatibility is before you buy. Hopefully you can recoup all/most of what you spent on it.



You could pick up a new motherboard ,but I highly doubt it's going to be worth the expense. Used 2011 boards are not cheap.

You could look to custom BIOS's or BIOS mods which could potentially enable support - but those would definitely be a "use at your own risk" situation. I haven't tried any out to confirm if something works.... but if you really want to try and use the V2, it's a potential solution.

OEMs (HP etc) get complicated, as the boards themselves can be proprietary. Their motherboards only had to support SandyBridge when the HP Z420 launched as IvyBridge hadn;t released yet.

Even in the mainstream consumer space, socket compatible does not always = compatible definitively. Although it's usually easier to obtain compatibility via BIOS updates.
 
Upvote 0 Downvote
Solution
K

klhsx1

Distinguished
Mar 16, 2016
98
0
18,630
I had no idea that a Z420 had different motherboards at different production dates, I thought the model was the model and no variations. I had seen so many Z420's with this chip online for sale and when I planned my build here in the forums, no one ever mentioned anything about checking the date of the motherboard to ensure the chip would work, they only checked the socket type and we planned the whole build around that. That is too bad, but not the end of the world, I will sell it back on Ebay. I will most likely look for a V1 version and just live with that, its basically 20% performance increase anyway.

 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom