Memory Problem

I installed 16G ram to my existing 16. The computer is a HP Elitedesk 800G1
When I reboot I get a message the "The system memory size is different from the last boot, press F1 to configure. A little icon with F1 boot appears at the bottom of the computer, but does nothing when pressing, to make sure it was not the disk, or not seated properly, I changed them all around, finally to get online I took 2 disks out, came on, no matter what two slots or which two memory sticks I use it will only boot when there is 16Ram, putting in one or both of the new sticks, will get the error message. T.I.A.

 

It would help to know the make and model of your motherboard. It may require an updated BIOS to run the full 32GB's.

You can also check with your motherboard's website and see what updates might be required . . . or if there is a forum there other users may have "rammed" into the same issue. If this is a commercial PC (Dell, HP, etc.) check with their page for your particular computer.

 

Did you research what type of ram you needed prior to purchase?

Did you buy ram that was compatible with with mobo (check on mobo website)?

When adding more ram, it is usually wise to buy same brand and model as existing ram

 

Thanks, bought the same brand

Thanks,I bought the exact same ram as the two installed, even swapped them around. I called the guy I bought it from and he had 32G at one tie

 

Do I infer from your posts that you originally had 16Gb but as 2 ram modules and you have now bought another 16Gb again as two ram modules.

So for clarity you now have 4x 8Gb modules=32Gb?

If that is the case, then populating all four ram slots can cause issues and may require Bios tweaks namely to probably slow the ram down when all 4 modules are installed.....

 

Thank you for the reply, Right now I have 16Ram, upon installing the other 16 I get the message that there was a difference in the size of the memory and to hit F1 to reconfigure it, does nothing ,for it to boot I can only leave 2x8 =16G it is the exact same memory sticks, I changed them every way possible so there is no problem with the memory sticks or the inserts. BTW the mother board serial # is 2UA4139FW, someone else asked for it.

 

Thanks again for your help, this computer once had 32G, I called the previous ownrer, shows 4 slots on Belarc I copied this I hope it helps, I don't know where else to look

Windows 10 Professional (x64) Version 2004 (build 19041.388)
Install Language: English (United States)
System Locale: English (United States)
Installed: 2020-06-05 9:59:29 AM
Servicing Branch: Current Branch (CB)
Boot Mode: UEFI (Secure Boot likely not supported by this UEFI)
System Model
Hewlett-Packard HP EliteDesk 800 G1 SFF
System Serial Number: 2UA41329FW
Asset Tag: 2UA41329FW
Chassis Serial Number: 2UA41329FW
Enclosure Type: Low Profile Desktop
Processor a
3.60 gigahertz Intel Core i7-4790
256 kilobyte primary memory cache
1024 kilobyte secondary memory cache
8192 kilobyte tertiary memory cache
64-bit ready
Multi-core (4 total)
Hyper-threaded (8 total)
Main Circuit Board b
Board: Hewlett-Packard 1998
Serial Number: 2UA41329FW
Bus Clock: 100 megahertz
UEFI: Hewlett-Packard L01 v02.73 01/22/2018
Drives
479.03 Gigabytes Usable Hard Drive Capacity
356.00 Gigabytes Hard Drive Free Space

hp CDDVDW SN-208FB [Optical drive]
TSSTcorp CD/DVDW TS-L632D USB Device [Optical drive]

OCZ-AGILITY3 [Hard drive] (240.06 GB) -- drive 1, s/n OCZ-6QVC44Q25S946812, rev 2.25, SMART Status: Healthy
SanDisk SSD PLUS 480GB (480.10 GB) -- drive 0, s/n 201684804556, rev UG4004RL, SMART Status: Healthy
Memory Modules c,d
16276 Megabytes Usable Installed Memory

Slot 'DIMM4' is Empty
Slot 'DIMM3' is Empty
Slot 'DIMM2' has 8192 MB
Slot 'DIMM1' has 8192 MB
Local Drive Volumes
c: (NTFS on drive 0) 479.03 GB 356.00 GB free
Network Drives
None detected
Users (mouse over user name for details)
local user accounts last logon
Lukey 2020-07-31 9:49:09 PM (admin)
local system accounts
X Administrator 2014-11-21 11:24:04 AM (admin)
X DefaultAccount never
X Guest never
X WDAGUtilityAccount never
Font Driver Host domain logons
UMFD-0 2020-07-31 9:48:55 PM
UMFD-1 2020-07-31 9:48:55 PM
X Marks a disabled account; L Marks a locked account
Printers
Canon MG6300 series Printer on USB005
Canon MG6300 series Printer on CNBJNP_2C9EFC9EDCB4
Canon MX850 series FAX on USB004
Canon MX850 series Printer on USB003
Canon MX920 series FAX on CNBJNPFAX_F80D6031AD9C
Canon MX920 series FAX on WSD-b63bf655-32a6-4b60-bb9e-003005bc2259
Canon MX920 series FAX on WSD-75245d08-8328-4468-9c66-b18909b52108
Canon MX920 series Printer on WSD-e00898df-6867-4b8d-9e5f-39e4d5cfa9cf
Canon MX920 series Printer on WSD-07ac2b06-3648-4f1a-b1b4-83b65168e2c4
Canon MX920 series Printer on CNBJNP_F80D6031AD9C
Microsoft Print To PDF on PORTPROMPT:
Microsoft Shared Fax Driver on SHRFAX:
Microsoft Software Printer Driver on Microsoft.Office.OneNote_16001.12827.20538.0_x64__8wekyb3d8bbwe_microsoft.onenoteim_S-1-5-21-1116735238-3546534099-3326492503-1001
Microsoft XPS Document Writer v4 on PORTPROMPT:
Controllers
None detected
Display
Intel(R) HD Graphics 4600 [Display adapter]
Acer V223W [Monitor] (22.0"vis, s/n ETLBQ0C15412201A5440I7, May 2011)
Bus Adapters
Intel(R) C220 series chipset SATA AHCI Controller
Microsoft Storage Spaces Controller
Intel(R) 8 Series/C220 Series USB EHCI #1 - 8C26
Intel(R) 8 Series/C220 Series USB EHCI #2 - 8C2D
Intel(R) USB 3.0 eXtensible Host Controller - 1.0 (Microsoft)
Multimedia
Realtek High Definition Audio
Virus Protection
McAfee VirusScan
Virus Definitions Version Up To Date
Realtime File Scanning On
Group Policies
None detected
Communications
↑ Intel(R) Ethernet Connection I217-LM
primary Auto IP Address: 192.168.1.197 / 24
Gateway: 192.168.1.1
Dhcp Server: 192.168.1.1
Physical Address: A0:48:1C:92:CD:AE
Connection Speed: 1 Gbps
Microsoft Kernel Debug Network Adapter

Networking Dns Server: 192.168.1.1
Other Devices
Line In (2- Realtek High Definition Audio)
Speakers (2- Realtek High Definition Audio)
HID-compliant consumer control device
HID-compliant device
HID-compliant system controller
HID-compliant vendor-defined device (4x)
Logitech USB Input Device
USB Input Device (3x)
Canon MX850 ser Network
MX920 series _31AD9C4CD3CF
MX920 series _815102CAF650
HID Keyboard Device
Standard PS/2 Keyboard
HID-compliant mouse (2x)
Microsoft PS/2 Mouse
Canon MG6300 series Printer (Copy 1)
Canon MX920 series FAX
Canon MX920 series FAX WS
Canon MX920 series FAX WS (Copy 1)
Canon MX920 series Printer
Canon MX920 series Printer WS
Canon MX920 series Printer WS (Copy 1)
Fax
Microsoft Print to PDF
Microsoft XPS Document Writer
OneNote for Windows 10
Root Print Queue
Family Room
Microsoft Device Association Root Enumerator
Microsoft GS Wavetable Synth
Microsoft Radio Device Enumeration Bus
Microsoft RRAS Root Enumerator
MX920 series _31AD9C4CD3CF
MX920 series _815102CAF650
Generic USB Hub (2x)
USB Composite Device
USB Mass Storage Device
USB Root Hub (2x)
USB Root Hub (USB 3.0)
Generic volume shadow copy
MX920 series _31AD9C4CD3CF (2x)
MX920 series _815102CAF650 (2x)
USB Storage Use in past 30 Days
Device (mouse over for details) Last Used
Samsung SSD 840 EVO 250G, s/n 11DB81BF3727 2020-07-31 3:12:17 PM
TOSHIBA External USB 3.0, s/n 20150119006705F, rev 0 2020-07-30 11:02:24 PM
SanDisk Cruzer Glide, s/n 4C530001311025109230, rev 2.01 2020-07-30 11:01:32 PM
SanDisk Cruzer Glide 3.0, s/n 4C530000141220102584, rev 1.00 2020-07-30 11:58:58 AM
hp x900w, s/n 07009C82D2E5D773, rev PMAP 2020-07-30 11:58:57 AM
TOSHIBA External USB 3.0, s/n 20151109000822F, rev 0 2020-07-29 10:04:00 PM
Lexar ExpressCard, s/n 106A7811105535040507, rev 1100 2020-07-26 5:52:32 PM
Kingston DataTraveler 3.0, s/n F46D04B071B3E2719927026C, rev PMAP 2020-07-24 10:19:53 AM
TOSHIBA External USB 3.0, s/n 20180629003360F, rev 5438 2020-07-16 4:47:42 PM
Generic Flash Disk, s/n 1F7681B0, rev 8.07 2020-07-09 8:13:09 AM
Canon MG6300 series, rev 0104 2020-07-08 11:00:16 PM*
Canon MX850 series, rev 1030 2020-07-08 11:00:16 PM*
Generic- Compact Flash, s/n 20100818841300000, rev 1.00 2020-07-08 11:00:16 PM*
Generic- M.S./M.S.Pro/HG, s/n 20100818841300000, rev 1.00 2020-07-08 11:00:16 PM*
Generic- SD/MMC, s/n 20100818841300000, rev 1.00 2020-07-08 11:00:16 PM*
Generic- SM/xD-Picture, s/n 20100818841300000, rev 1.00 2020-07-08 11:00:16 PM*
* Possibly used again before the reboot following this time.
Hosted Virtual Machines
None detected
Personal Home Use Only
See your entire network map...

 

If none of the other suggestions have helped. Sometimes pulling the cmos battery to reset the bios to defaults helps, if it is a bios setting issue. If not make sure the ram slots that have been empty are clean. I use compresses air and an old toothbrush with a little deoxit on it to clean connections if having issues. Some pc's are kind of picky, same brand and speed can still mean some difference's. Double sided ram and single sided ram don't always mix well.