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Fix for computer rebooting over and over. Can’t get on it at all.

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HP Pavilion 570
Microsoft Windows 10 (64-bit)
Hello! I’m currently having to post this with my phone so bare with me on the spelling and autocorrect. So when I turn on HP desktop computer the HP Logo comes up and sits for around 30 seconds and then my computer shuts off, turns on by itself, and repeats this process over and over again. Ive had the computer since 2015 but I haven’t used it in over a year, but the last time I used it it was having this same problem so I packed it up and put it away, now I need to use it again. Please help.
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Stage 1 is the POST (POWER ON SELF TEST), then thru to the BIOS and BOOT.


So a full diagnostic if you can ESC and F2.


Then please report the outcome.


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I tried POST and it still does the same thing and In the full diagnostic everything passed. I’m more or less ignorant when it comes to computers but I’m pretty sure I did everything you asked
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So if it passes the diagnostic, then it should be a software issue.


Do you have the F11 function still, can you make a repair disk?


Please read thru this and ask again....


This First part only works when a valid Recovery Partition is enabled.
If it displays an error message then move onto the Second Part:-
OR if you have data you wish to try and save using the XCOPY command.
Then create your own Repair/Recovery/Rebuild/Re-install media or buy a set from HP.

Turn off the computer.
Disconnect all connected devices and cables, Media Drives, USB drives, printers, & faxes.
Remove media from internal drives, and remove any recently added internal hardware.
Do not disconnect the monitor, keyboard, mouse, or power cord.

Turn on the computer and repeatedly press the F11 key, about once every second,
until the Choose an option screen is displayed, and then continue.

On the Choose an Option screen, click Troubleshoot, and work your way through the screens.

Second Part:-
This may require another PC. Find and Download your .iso from…
(You will need a NON_OEM key for W7);
W8.x and W10 should activate automagically from their embedded licence key.

For when it’s a NON MS OS ( iOS / Linux ) creating the install media.

A 3rd party site is (Please be careful)...

Expand/Extract/Burn the iso Image onto a DVD/USB as needed.
Microsoft’s Creator Tool will make the required DVD or USB.

Even though it has NO actual HP software/drivers included, you may be able to
XCOPY the C:\Users\* area onto a ‘large’ USB stick, via the Command Prompt.

You’ll need to try various drive letters; D:..-..Z: until it’s matched - could be G; mine’s S:

C:\>XCOPY C:\Users\* S:\ /e /i /h (then files like those 3 listed below get copied over)

C:\Users\All Users\agent.1509128044.bdinstall.bin
C:\Users\All Users\HP Deskjet 2540 series\Help\flash\zoom.swf

Then you can try System Recovery Options / Advanced Options shown in the screenshots.

NB:- W7 Try running a Startup Repair more than once for a full fix.
NB: - W10 Begin with the Automatic Repair, then Startup Settings etc.

From either the C:\ or the X:\ prompt try the following

cd boot
bootrec /FixMBR
bootrec /FixBoot
bootrec /RebuildBCD

If the above FAILS then please try:-


You may need to change the Secure/Legacy  boot option, and the boot sequence also.

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