I have a desktop envy every time I shut down and try to restart I get 3 blue lights flashing

[mikevel]

• Envy desktop every time I shut down and restart I get 3 short blue flashes, followed by 3 longer blue flashes and beeps and nothing on screens. I've replaced cmos battery and switched memory slots, can't get it to boot. It's been a reoccurring problem but by keep pushing the start button and holding it down eventually it started to boot

 Now it won't boot up at all no matter what.

[Irfan_06]

Hi @mikevel,

Welcome to the HP Support Community.

Thank you for posting your query. I will be glad to assist you.

I see that you are facing an issue with your PC that is not booting up.

To understand the issue and help you, please share the details listed below:

Note: Do not share any of your personal information such as serial number, phone number, email ID, etc., on your public post.

- Exact model number/product number(SKU number) of your HP Product (Click here for information on how to find the model number/product number).

- Error messages (if any) on the unit.

- When was the last time it was working fine?

- Were there any changes made to your PC recently?

Take care and have a great day ahead!

Irwin6

HP Support

[mikevel]

• Model number 750-427C
• product x6f52aar#aba
• Envy 750 DT PC
• Upon trying to start I get 3 short beeps, 3 long beeps green light flashes for each beep. Then solid green light after I believe 5 sequential beep series it stays solid green light. Nothing shows on either monitors (I have dual screens)
• I have put in a new cmos battery and swapped the memory cards(2 8gb each)
• The screen is blank on startup. 
• It will not boot up now at all, previously I would have to press and repress start button a number of times for it to finally boot up. This seemed to happen after every shut down or windows upgrade 
• There were no hardware changes and only windows regular updates. 
• I've pulled memory and reseated them, still no boot up
• I've tried hitting f. Buttons and esc but nothing works

[Irfan_06]

Hi @mikevel,

Thank you for sharing the above information.

Follow the below steps to fix the issue.

-Perform a drain on your PC.

1) Unplug the power cord from the PC & wall.

2) Disconnect the power cable from the AC adapter if it is a detachable part and keep it aside.

3) Press and hold the power button down for 15 seconds and release the power button, wait for about 30 seconds.

4) Plug the power cord back into the AC adapter, then connect it to the wall and to the charging port on your PC.

5) Power on the PC and check if it boots into Windows now.

- Kindly refer to the steps on this link to troubleshoot and let me know if that resolves the issue.

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.

I hope this helps.

Take care and have a great day ahead!

Irwin6

[mikevel]

This did not solve the problem. Same thing still happens 

[Irfan_06]

Hi @mikevel,

I am sorry to hear that the above steps did not help much but i do appreciate your efforts in performing the troubleshooting steps.

Please follow the steps below to perform an extensive system test to confirm if the hardware is working fine.

1) Shut down the computer.

2) Turn the computer back on again and repeatedly tap on the ESC until a Startup menu appears.  

3) Press F2 once.  

4) Go to the system test > extensive test

If the hardware is working fine. Please click on this link to perform a recovery on your Laptop.  (Take a backup of the data before performing a recovery)

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.

I hope this helps.

Take care and have a great day ahead!

 Irwin6

HP Support