Blank screen

[y2ken]

The blinking Caps Lock and Num Lock are the key.

Please refer to the Blink Codes in this link to determine what the problem is.

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[saikumarc]

I use windows 10 os in my HP EnvyDV4 laptop.

I was not using the system (since I was out of town) for about15 days and now when I try to switch on its simply remains blank. After sometime it says boot device not recognised.

I tried removing battery, and again switiching on but no avail. What should I do?

[DDx]

Obviously no help apart from the usual; if it work ok otherwise; nothing helpful!

[Jupiter1234]

I have this sympton as well on my 8 month old Envy. How do I remove the battery?

[rick-s]

@Jupiter1234

Hello,
Thank you for posting in this thread. Unfortunately, based on when the last response was made, I have closed this thread to help keep comments current and up to date. I recommend starting a new thread for your issue by clicking here: https://h30434.www3.hp.com/t5/forums/postpage

To be more helpful with your post, you may add key information if you wish:
1. Product Name and Number (please do not post Serial Number)
• Example: HP Pavilion DV2-1209AX or HP Deskjet 3000 Printer CH393A

2. Operating System installed (if applicable)
• Example: Windows XP, Windows Vista 32-bit, Windows 7 64-bit

3. Error message (if any)
• Example: ""Low disk space"" error in Windows

4. Any changes made to your system before the issue occurred
• Examples: Upgrading your Operating System or installing a new software; or installing new hardware like a printer, modem, or router.

If you have any other questions about posting in the community, please feel free to send me a private message.

Thank you.