Forum RSS Feed Follow @ Twitter Follow On Facebook

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
[-]
Welcome
You have to register before you can post on our site.

Username:


Password:





[-]
Latest Threads
[REQUEST] ThinkPad E15 Gen 2 - BIOS Upda...
Last Post: Ronin314Clear
Today 06:19 PM
» Replies: 0
» Views: 50
[REQUEST] Asus Zenbook (UM535QE) Bios M...
Last Post: Bravo6
Today 03:41 AM
» Replies: 0
» Views: 213
OptiPlex 360 380 760 780 960 Xeon LGA 77...
Last Post: LoFabio
Today 03:38 AM
» Replies: 265
» Views: 330777
[REQUEST] Asus G614JV BIOS Unlock
Last Post: Mrgraysky
Today 01:02 AM
» Replies: 0
» Views: 142
[REQUEST] HP Compaq nx6120 WiFi Whitelis...
Last Post: Maxinator500
Yesterday 09:24 PM
» Replies: 1
» Views: 216
[REQUEST] Acer Nitro 5 AN517-52 BIOS Unl...
Last Post: Dudu2002
Yesterday 03:50 AM
» Replies: 24
» Views: 10552
[REQUEST] Acer Nitro ANV15-51 BIOS Unloc...
Last Post: Dudu2002
Yesterday 01:14 AM
» Replies: 3
» Views: 207
[REQUEST] Lenovo Yoga S940-14IIL (BQCNxx...
Last Post: Dudu2002
07-15-2025 03:09 AM
» Replies: 1
» Views: 386
[REQUEST] Lenovo G400S (7BCNxxWW) Whitel...
Last Post: helrobsil
07-14-2025 09:10 PM
» Replies: 217
» Views: 112563
[REQUEST] Lenovo Ideapad S510p (89CNxxWW...
Last Post: Dudu2002
07-14-2025 12:04 PM
» Replies: 181
» Views: 92110
[REQUEST] GA-8I865GME-775-RH (rev. 3.9) ...
Last Post: DeathBringer
07-14-2025 01:48 AM
» Replies: 3
» Views: 648
i7 2860QM how to raise power limit?
Last Post: DeathBringer
07-13-2025 07:43 AM
» Replies: 12
» Views: 903
[REQUEST] Dell Wyse 3040: CSM enable for...
Last Post: mm400
07-13-2025 05:58 AM
» Replies: 1
» Views: 817
[REQUEST] Acer TravelMate 5760(G,Z) BIOS...
Last Post: quibic
07-12-2025 01:03 AM
» Replies: 49
» Views: 26900
Asus P8Z77-M RT-d Unlock
Last Post: cbaldwin1
07-11-2025 04:21 PM
» Replies: 0
» Views: 571
[REQUEST] Lenovo Yoga 530-14ARR (8MCNxxW...
Last Post: Dudu2002
07-11-2025 02:04 PM
» Replies: 4
» Views: 3274
[REQUEST] Gigabyte GA-X99P-SLI BIOS with...
Last Post: DKisCRUSHIN
07-11-2025 09:50 AM
» Replies: 0
» Views: 591
Acer Aspire 5920G - Requesting Modded BI...
Last Post: EbrahimSiami
07-10-2025 02:56 PM
» Replies: 1
» Views: 542
Acer A517-51G-58S5 - Complete BIOS image...
Last Post: Humboldt
07-10-2025 01:07 PM
» Replies: 2
» Views: 647
Lenovo Yoga Pro 7 14ASP9 Bios Unlock
Last Post: Dudu2002
07-10-2025 03:02 AM
» Replies: 3
» Views: 663

Microcode Update for HP Compaq DC7900 (786G1) to support Q6600 (4 cores in general)
#1
Hello, dear community.
Not a while ago I stumbled upon on a peculiar problem with my DC7900 USDT. Against all odds and specification from HP, I have managed to upgrade my Dual core E8400 cpu to a Quad Core Q6600. The pc is working flawlessly and there is a really noticable boost performance after the upgrade.
However there is a little hiccup, every time I restart the pc or Power it ON a warning error 1801 Microcode Update Error pops up and the pc does not boot till I push the F1 Button. It is really annoying and frustrating. So here is my question: 
Is there anyway to update the bios with the latest  QUAD CORE Microcodes, because I am already using the latest produced bios from HP and I even updated the firmware and microcodes for my pc from their support page, but it does not seems to affect in anyway the presented problem. I am starting to wonder, that maybe HP excluded these quad core microcodes from their USDT models on purpose. So you are my last hope to help me solve this problem and to achieve one really great success on 4 core upgrades to DC7900 USDT, an upgrade which was impossilble till now.
Here I apply link to their latest bios and other useful screenshots of my system.

1. Original DC7900 USDT BIOS: https://ftp.hp.com/pub/softpaq/sp73501-7...p73584.exe
2. Microcode for HP 786G and 786H8 Bios Family: https://ftp.hp.com/pub/softpaq/sp51001-5...p51181.exe

               
find
quote
#2
Try to use my mod
find
quote
#3
Thumbs Up 
@DeathBringer, brother You Are a PURE MAGICIAN! Heart
Your modification works as Smoothly and Efficient as it can be! Idea Cool
Now the cpu is updated with probably the best and the latest quad core cpu microcodes and the annoying and frustrating problem with the 1801 error code IS GONE!
The PC boots fast and flawlessly as it booted before with the dual core, only now QUADRO POWERED and Performance Boosted, thanks to you.
Can not thank you enough for the service you do for this community, priceless modifications you create here and the fast response you took to the users in need. You are truely vital and unexpendable member to this forum and I wish you to keep up with the incredible work and the gold standards you set! Thank you again for the fast and effortless mode.

P.S I even BSEL Moded The Q6600 and now it's even faster, turboing to 3Ghz with an FSB of 1333 mhz!
Here I am applying some screenshots of the system and AIDA64 for evidence and for future reference
for those who want to break the limits of DC7900 USDT!
P.S 2 Impossible is Nothing!

                   
find
quote
#4
Would anyone here know if there's a tutorial on how to install that mod? I'm kind of new with bios mods, I want to install an old Q6600 in my son's computer. Thanks guys
find
quote
#5
Just unpack and run it in native DOS with installed Q6600.
find
quote
#6
I've tried running the q6600 prior to the mod install and get bsod within 2 minutes of running. Not sure if this is because of the missing microcode. Can i run the mod update with the old cpu in, and then swap over?
find
quote
#7
tried running flashbin via msdos, "start flashbin.exe" and got an error that said not compatible with the version of windows im running (windows 7 pro, x64)
find
quote
#8
DOS isn't command line in Windows.
Make DOS USB-stick (e.g, by Rufus).
Microcode is updated for current CPU only. So boot with Q6600
find
quote
#9
(05-12-2020, 01:33 AM)DeathBringer Wrote: DOS isn't command line in Windows.
Make DOS USB-stick (e.g, by Rufus).
Microcode is updated for current CPU only. So boot with Q6600

This is the true line of preparing the bios, and after that you have successfully flashed your bios you can try any mods of the cpu...
P.S Just Ordered a Xeon X3363 (Q9550) to experiment further. Will share info when the shipment is here
P.S 2 DO request to DeathBringer, He is The Man \m/, me just testing
find
quote
#10
Hi, my fired just threw out a DC7900 usf. I picked it up and tried to install Q9500. I cant boot to Ms Dos with Q9500 to run flashbin.exe mod. Its stucked in the “processor not supporter” screen. F1 doesnt work. Help please?
find
quote


Forum Jump:


Users browsing this thread: 5 Guest(s)