Okay so the day before the computer was working great.
Next day I get on it to do some work and the screen is black. When it's powering up I can hear the fans and everything but the screen remains black. After a while of it being like that it starts beeping.
I tied holding down the power button for 30 seconds and it's still black with no words.
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As I understand you are having issues with the computer goes blank after startup on your HP Touchsmart Desktop PC. Don't worry as I have a few steps that should help to resolve the issue,
Let's try these steps here:
Remove any media from the floppy drives, CD/DVD drives, USB ports, and memory card reader slots, and disconnect all non-essential devices (printers, scanners, external hard drives, and similar). Leave only the keyboard and mouse connected to the computer.
With the devices disconnected, restart the computer. If the screen now displays a picture and Windows starts properly, a device is preventing the computer from starting. See Updating the BIOS to resolve this issue.
If the screen does not display a picture or Windows does not start properly, select one of the symptoms that most closely matches the condition of the computer:
As I understand you have followed the steps suggested and still having the issue, I would personally suggest this to be a hardware failure. I would recommend you contact our HP phone support for available service options. Please fill in the product details to get the tech support number.
Please use the following link to create yourself a case number, then call and it may help speed up the call process: