Hp Touchsmart IQ770 Desktop, Black Screen

[Lily835]

Same problem here except the screen has verticle colored lines across a black background. Had new power supply installed and it worked fine for several days. One day, I turned it on and same problem happened. I'm not sure what i did, but after turning it on & back on a few times, it booted up normally and has been working fine since. Of course, i have not shut it off. I'm afraid to power off and keep it on all the time. Not comfortable doing that. Wondering if it's o.k. to leave it on? Afraid to turn it off for fear it will not power on again and all my pictures & saved stuff will be lost.

[tomhod10]

need help.. hp touchsmart iq700 desktop, black screen

[kiaralong]

Spoiler

i had a black screen to but no beep

[Hiddenvision]

Hey Lily,

If the computer crashes due to a graphics failure then the chances of you loosing data is like 0.01%.

Your data is stored on the hard drive and even if the machine was not able to be recovered then

you could simply remove the drive, put it into a USB caddy and access your data that way.

I have a feeling that changing the power supply had no effect and

it may have simply been the moving of the wires and board that has rectified the fault temporarily.

Normally the graphics faults are due to Failed boards or failed connections,

or failed connections on the boards !

If you paid for the service and it has not fixed the problem they you should request your money back.

Leaving it on can be an option but as heat is a large fator in the failure if

the airflow has not been improved then it may be doing the same (overheating and slow cooking).

To be honest, if a device you own is not reliable how much do you want to rely on it.?

It may be time to concider updating the hardware to someting more stable.

Hv.

[Hiddenvision]

Hey Tom,

What more help can we offer you.

Hv.

[Hiddenvision]

Hi Kiara,
Sound more like a power supply or non graphics issue.
Do the fans spin,? do the lights come on,?

Hv.

[tishlangston]

Now it is my turn....have an IQ775 that is mainly used by the kids, though I try to maintain it....Computer goes through the initial startup, dvd cycles, lights come on, hdd operates but nothing but a grayish white screen....have tried the holding down on f10, then f5 to reset bios.....nothing.....computer does restart when enter is pressed after f5 is pressed so computer seems to respond just no video.......help!!

[DrAaronErnst]

The fix for me was new powersupply. Everything works now. eBay for 35.00

[tishlangston]

Just curious how power supply makes the difference....would be fantastic if that cures the problem!

[Hiddenvision]

I guess if the power supply is faulty then a change over would sort it out..

Never seen a faulty supply but that does not indicate that it cannot happen.

Obviously in the situation above it sorted things out.

Black screens could always be a few, different or combined, things from power to broken connections or faulty components.

Removing the Onboard graphics card is a fairly simple process that will help to eliminate that from the list of possibilities.

If the Machine boots up fine without the card then you can opt to use it while you find a replacement.

Well worth the effort...

Some of these machines are getting a bit old now and as such the 2nd hand spare parts you purchase may not be far off failing themselves.

If only HP had designed the screen module to be complete with a fairly standard interface.

Then at least people may have had the option to replace the 'computer' with something else while keeping the touchscreen.

No doubt they will all end up in the crusher after time.

Hope that helps.

Hv.