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Black screen fan surges no beep

HP Recommended
Pavillion 400 034 pc

Recd from my daughter. Was sitting new in box in corner of her living room for 6 years my daughters ex fiancé gave it to her I recd it new in box. Tried to set it up: no video, no codes, Hard Drive light blinks continuously. I first got it it woul turn on fan woul surge then computer would shut down.  I removed cmos battery and reinstalled it. Now still no vid, monitor tests good. Fan surges every 30-50 sec. computer and fan continue running after surge, 

HP Support Agent
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@Danley2 6 years is a long time, the product goes into the obsolete list after 4yrs of purchase, that said, here's a few things we can attempt to fix the issue, however, the description so far points towards a hardware malfunction, I suggest you check with an alternate power cord or another wall outlet.


If nothing works, try the below steps:

  • Ensure your device is OFF.
  • Unplug all the external devices (If any).
  • Disconnect the power from the computer
  • Press and hold the power button for about 30 seconds.
  • Connect the power supply
  • Press the power button to turn on your device.

If the issue persists, click here for steps to troubleshoot the issue

And resolve the steps using the step by step guide.


P.S: Welcome to HP Community 😉


Let me know how that pans out,

If you feel I was helpful, simply click on Accept as Solution to help the community grow,

That said, I will have someone follow-up on this to ensure you've been helped,

Just in case you don't get back to us, 

have a good day, ahead.

I am an HP Employee

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