No display or boot

[CadenceLight]

When I turn my computer on for the first time in a day, it boots into Windows like it should. However, when I restart the computer, it turns on but I don't get a response from the display and there is no power being supplied to the keyboard or mouse. I've hooked this computer up to multiple displays, keyboards, and mice and I get the same result. I also get no beep error codes or any error codes from the front LED or on the display. After I restart it, I can't get it to work for the rest of the day most of the time. Sometimes after I restart it and then turn it off, I'll try again after a few hours and it will boot right into Windows. If I restart it again, it repeats the same behavior as before.

When I turn the computer on for the first time on a new day, it turns on and boots into Windows like normal. I can use it and its a reasonable experience. However, sometimes I have to restart it. When I restart it, it goes out of the operating system like it should and then nothing else happens. No HP screen or BIOS information. No error codes at all and my display turns off.

This problem has been happening for a long time now (at least two years). I remember upgrading it to Windows 10 (more than two years ago) and that's it. I don't remember it doing this when Windows 7 was installed. A few months ago, I fixed an audio driver issue but this problem has been happening way before I fixed that.

I am at a loss here. I ran diagnostic tests on the RAM and I made sure the speeds match. All tests said there are no errors with RAM. I just cleaned the CPU and heat sink and applied new thermal compound. The hard drive is in perfect health (according to Hard Disk Sentinel). I also checked the BIOS to make sure there wasn't anything that needed to be configured (I did change the time to the correct settings). I tested the power supply with a multimeter and everything was normal there.

Does anyone know what the problem could be and if there is a way to fix it? Any advice/help is greatly appreciated. I would really like to get this computer up and running for my family if at all possible.

[Echo_Lake]

@CadenceLight

Thank you for posting on the HP Support Community.

I appreciate your efforts to try and resolve the issue. I would suggest performing system factory reset will put the computer back to the original factory settings in this way all corrupted and outdated software will be removed. 

While doing the recovery there is an option to backup your personal files. If you have not previously done one now is a good time. 

Restoring Files that were Backed Up Using HP Recovery Manager (Windows )You can also contact HP support for assistance. They can remotely access your system to help alleviate difficulties: www.hp.com/contacthp/

The HP Cloud Recovery Tool allows you to download recovery software to a USB drive. You can use the downloaded recovery image file in order to install the Windows operating system. 

• Click here: https://support.hp.com/in-en/document/c04758961#AbT3to perform System Recovery 
• Click here: https://support.hp.com/in-en/document/c06162205 to Use the HP Cloud Recovery Tool 

Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.