And sometimes goes into a sleep restart mode. I did a lot of steps like setting the sleep to NEVER and even got so fed up that I reset the computer and reloaded certain programs that are considered safe. It behaved for a while and is now back. I did an antivirus check ans a malwares scan and found nothing. I forgot to add that sometimes it does this while booting up, it's so weird.
I've had where like Toshiba and a few other computers have their own power management software that ignores whatever you have Windows Power Management set to for sleep mode etc. Does your computer have a bundled power management utility that is ignoring Windows power management?Hi
Can you run Speccy and post a link to the report.
Free version from here https://www.ccleaner.com/speccy/download
After it runs select File , Publish snap shot and then copy the link provided to your next post.
To Dave, not sure about your question but I've gad this computer for at least 3 years and it hadn't been doing that.

To  Lisa_maree,, I will download and try that.
I downloaded it and am posting the link.

http://speccy.piriform.com/results/ubdQPGDtjhJb7Ypzg11oZCg


Thank you for the speccy report. The only thing which looks ODD is the 8 gb and 4 GB memory modules being different MAKES and models. I suspect the 8 GB has been added. This wouldn't normally be a problem.

What happens if you run the computer with only the 4 GB memory  installed?

I can't read from the Speccy report if all the drivers are loaded. If you supply the model of HP computer I can check for Windows 10 drivers and provide a link. 
 HP PO-570-P026Here is the drivers for Windows 10 64 bit

 https://support.hp.com/us-en/drivers/selfservice/hp-pavilion-570-p000-desktop-pc-series/13823514/model/16571089Kind of confused after opening all the drivers, Do all the drivers need downloading and installed or just the latest dated ones?You could use HP support assistant from here

https://www8.hp.com/us/en/campaigns/hpsupportassistant/hpsupport.htmlOK, thanks.
The HP support assisant hasn't been helpful.Just re-install all of them....it'll ignore those it don't need.
Thanks Patio.
I downloaded all of the latest drivers to no avail. FINGERS crossed, I dug through all my old computer parts and found a matching VGA cord. So far everything is working fine.No luck, it lasted  600   sec