Windows 10: About 9 weeks ago my pc starting acting up, it said that I had 1 core only when I have a 4...

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ONLY showing using 1 core out of 4 core processor

I don't know a lot about computer hardware or software problems. I run a Dell Inspiron 20 All In One PC. Model 3045. It is a 4 core computer. In the bios and Device Mgr. only shows operating on one core. There is only one item entry. AMD A4-5000 APU with Radeon TM) HD Graphics.

A couple weeks ago PC acting weird - first, very slow. Odd messages: such as (not exact error message) Shutting down because of problem will restart. Adapter/Charger check. Bought new dell adapter and no difference

Had my local computer guy check and he is the who told me about only operating on one out of four cores per the bios and device mgr. Called Dell and they ran a diagnostic and advised hardware no problem. Wouldn't address issue of why then does it show only one core operating. Next I called MS and they ran diagnostic and confirmed software ok. They cleaned it up and ran somewhat faster, but not like a new machine.

Any direction you can offer would be appreciated. Dell is 2 1/2 years old.

 

Running on 1 core out of 4

Correct. For example, I have an I7-3770K and have hyper threating enabled then it would show: 8





Normally, you would use those boxes for diagnostic. For example, if you suspect that one of your RAM sticks is bad then you would want to run Windows on the first stick only instead of physically remove it from the PC.
I have 16GB and here I isolate my RAM to the first 4GB then system properties would show:

 

Problem updating Windows Surface Pro 4 with Windows 10 feature updates

Hi,

I have manage to install image for Microsoft Surface Pro 4 by going to https://support.microsoft.com/en-us/...erecoveryimage and download a recovery image for Microsoft Surface Pro 4.

What I did to reset your Surface from a USB recovery drive was:
Step 1: Make sure your Surface is turned off and plugged in (hold down the power
button for 30 seconds).
Step 2: Insert the USB recovery drive into the USB port on your Surface.
Step 3: Press and hold the volume-down button while you press and release the
power button on your Surface.
Step 4: When the Surface logo appears, release the volume button.
Step 5: When prompted, select the language and keyboard layout you want.
Step 6: Select Troubleshoot > Reset your PC.
If prompted for a recovery key, select Skip this drive at the bottom of the
screen.
Step 7: Select the target operating system you wish to reset. This
refers to the current operating system installed on your Surface.
Step 8: Select Yes, repartition the drives, and on the next page, select Next.
Step 9: Choose Just remove my files.
Step 10: Select Reset.
Surface restarts and the Surface logo displays while the reset process continues
(this can take a while).

This always fails and I have to do the below which continues installation.
Windows 10 Installation Media:

1. Insert the Media (DVD/USB) in your PC and restart.
2. Boot from the media.
3. Select Repair Your Computer.

Select Troubleshoot.

1. Choose Command Prompt from the menu:

Type in the command:
Diskpart
Type in the command:
List disk (Note which disk is your Boot drive number mine is 0)
Type in the command:
Sel disk 0
Type in the command:
List vol (Note which volume is the EFI partition mine is 4)
Type in the command:
Sel vol 4
Type in the command:
assign letter=V:
Type in the command:
Exit
Type in the command:
V:
After you have assigned a drive letter Using Diskpart You can format the EFI partition:
Example: if you assigned a letter V to the partition the command would be:
format V: /FS:FAT32
Type in the command:
bcdboot C:\windows /s V: /f UEFI


Now I have an issue that I cannot install Feature Updates. They keep failing to install.
Any ideas how to resolve issue?