Screen is not functioning

310 dash what? 310-1000? it really and all-in-one PC.
what is the full model name and number.
no text? screen never ever shows any thing?

is the fan running inside, and blowing air.? it must.

the steps are here at hp.com

https://support.hp.com/us-en/product/hp-touchsmart-310-1000-desktop-pc-series/4273627/manuals

PC boot in serial progression.
power on
fan blows.
BIOS POST's with errors if found. (3 ways) beep ,text or flashing keyboard led codes.
bios text mesages, logos
windows boots.
windows login, screen
last desktop and (startup files load)
where do you land here.?

see no power? there?

Hello,

1. When you press the power button to turn it on, do you see any thing on screen, It probably should show an ACER logo?

2. Can you see a faint image of your desktop (try to see it in dark place with flash light). If you do see a faint image it could mean your back light is broken.

3. When you press the power button do you get different LED's lighting up on the laptop? IE power LED, hard drive LED?

4. Does your computer give you any random beeps when it starts up?

Please answer these questions and I would be more than happy to work through this with your.

Thanks RCCT

Hi,
My point of view RAM section direct connect to display so first you check RAM.Then check processor Fan proper working or not. and finally power connection in screen.
Thanks..

it will be ok if you reinstall your os

windows or you need a bios reset

Try flipping it over, unscrewing the back panels and pop them off. Take out 1 stick of memory if there is 2, or take all memory out. Then try to turn it on. It will either do nothing but turn on and beep, or it will turn on but show nothing on the screen. Then shut it off and put the memory back in. Sometimes this kind of reset gets past that bios screen. Otherwise your memory may be bad. The other culprit can be the battery. Try removing the battery and starting it with it plugged into the wall. Let me know if this fixes your issue.

Have you tried an external keyboard, either PS2 or USB depending on what ports are available?

get it serviced?
my guess, damaged screen.
most shops would touch any Ipaq.
why not ask on a real HP forum?
my guess, the only hope for old Ipaq

http://h30434.www3.hp.com/

If you are still in warranty, or even not, HP support is very helpful, moreso than most. If you have no computer access, call:
800-HP invent
or
800-474-6836 24 hours a day, 7 days a week for most products

i have the same problem with mine, the compaq screen shows and beeps twice and then it says press f1 or f10 but it doesnt respond to anything i press