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Black screen AND inoperable USB drives after update.

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#1
cros4t

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Upgraded to windows 10 on HP Pavilion p6-2133w a while back. Apparently there was some update this past weekend that basically rendered my system inoperable. When I log on, I almost immediately get a "no signal" message and the monitor goes to sleep. The keyboard and mouse stopped working too, so I can't bring it out of sleep and turning the screen off and on doesn't change anything. I connected to a different cpu and everything worked fine. I even bought a new monitor, which came with new cables so the cables aren't the issue. I had to update all the USB drivers on my other computer because the WiFi adapter wasn't working. I tried a new keyboard in and entirely different USB port and it still didn't work. I don't want to junk the computer. Is there anything that I can do?
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#2
phillpower2

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Hello cros4t,

 

Bit confused by the following from your OP;

 

I connected to a different cpu and everything worked fine.

 

 

Would I be correct in thinking that you connected your screen to another computer to test it and the screen worked ok.

 

Couple of other questions;

 

Are you able to access the BIOS.

 

Are you using the integrated graphics or an add on video card.

 

I had to update all the USB drivers on my other computer because the WiFi adapter wasn't working.

 

 

Which computer are you referring to above.


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#3
cros4t

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I apologize, the cpu with the problem has the black screen and inoperable USB drives. I cannot access Bios or seemingly anything. I did connect the peripherals to a different cpu to see if they were the problem. That's the cpu with the WiFi issue, (I think because of an update), but I was able to get that fixed. Sorry for being unclear.
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#4
phillpower2

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I apologize, the cpu with the problem has the black screen and inoperable USB drives.

 

 

No need for any apology but I am still confused, CPU = Central Processing Unit which are typically made by AMD and Intel and fit into a socket on the motherboard (MB).

 

Sticking with the HP Pavilion p6-2133w Desktop for now, please explain what exactly has happened, what you have tried and whether or not you have an add on video card or are using the MBs integrated video port.


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#5
cros4t

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Last week, the computer was working fine.  I guess there must have been some updates last weekend.  Now the monitor says no signal and goes to sleep and the keyboard and mouse no longer work, so neither can bring the monitor out of sleep mode.  I thought it was the monitor, because I got it second hand and it was a few years ago. I did take the cover off the tower and blew all the dust out, just in case that was the issue, but no luck.  We bought a new monitor, but still the same problem.  That is when I brought my other cpu / tower (I'm not sure exactly what to call it) from the other room and hooked it up.  Everything worked, so it can't be the monitor, mouse, etc. I am not sure about graphics or video cards, I have not added, removed or changed anything inside the unit.


Edited by cros4t, 23 January 2016 - 01:21 PM.

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#6
123Runner

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Are you able to get in to safe mode at all?


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#7
phillpower2

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Unfortunately cros4t cant even access the BIOS 123Runner  :(

 

 

Last week, the computer was working fine.  I guess there must have been some updates last weekend.  Now the monitor says no signal and goes to sleep and the keyboard and mouse no longer work, so neither can bring the monitor out of sleep mode.  I thought it was the monitor, because I got it second hand and it was a few years ago. I did take the cover off the tower and blew all the dust out, just in case that was the issue, but no luck.  We bought a new monitor, but still the same problem.  That is when I brought my other cpu / tower (I'm not sure exactly what to call it) from the other room and hooked it up.  Everything worked, so it can't be the monitor, mouse, etc. I am not sure about graphics or video cards, I have not added, removed or changed anything inside the unit.

 

From what you describe it sounds like the computer is failing the POST (power on self test) see The System Boot Process Explained here for an explanation.

 

You have not mentioned hearing any error beeps from the MBs BIOS speaker so can I ask you to take a look at the picture that I have attached and then post back with the answers to the following couple of questions for us;

 

Is there an add on video card in the slot that I have outlined.

Does your MB have the same BIOS speaker that I have circled.

How many sticks of Ram are there in the memory slots and in which colour slots are they.

 

The answers to the above will determine what tests will be suggested first.


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#8
cros4t

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There is a slot, but no add-on video card

There is a BIOS speaker

There are two slots for the memory, they are both black and there is one card

 

Honestly, I don't remember if it made a sound when I turned it on. 


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#9
phillpower2

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The following checks require the computer case to be opened so take the following safety precautions 1st, disconnect the power cord from the wall socket, press the case power button in for around 10 seconds to dispel any residual charge in the system and be sure to take anti static precautions before touching anything inside, you can do this by touching a bare metal part of the case or the PSU.

 

Once done, connect the keyboard to the first USB port on the rear of the case, make a note of which black slot the Ram is in then remove it ( see steps one to six here ), reconnect the main power cord and press the power on button on the case, let us know if you get any error beeps.

 

If you get error beeps it may suggest that the Ram and memory slot are ok and that the problem is after the Ram has been tested as part of the POST, the MBs graphic chip would then be checked and unfortunately more often than not if the Ram passes it ends up being the video chip that is bad.

 

If you do not get any error beeps it suggests that the problem is before the Ram with the PSU and then the MB being the most likely cause of the issue.


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#10
cros4t

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It did beep with the ram removed. 


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#11
phillpower2

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Hopefully a good sign  :thumbsup:

 

After following the exact same safety procedures first, remove the MBs CMOS battery (see attachment below to help with this) replace the Ram in the slot that it was removed from (see steps seven, eight and nine here ) replace the CMOS battery, reassemble the computer, test and post back with an update for us,


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#12
cros4t

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Unfortunately, it did not fix it.


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#13
phillpower2

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It would be helpful if you provided a little more information than it did not fix it  :(

 

What happened exactly, any beeps, "no signal" message etc.

 

We rely on yourself to provide us with as much information as you can when we are trying to help, it is both unfair and unhelpful expecting us to have to ask for more info.


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#14
cros4t

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It made no sound and the no signal message was there, exactly as before.


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#15
phillpower2

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It made no sound and the no signal message was there, exactly as before.

 

Does not look good for the integrated video chip I`m afraid.

 

Starting with the second black memory slot, try the memory in each slot to see if the computer will boot up, if no boot at all and the same "no signal" message the only thing you can do is see if you can borrow an add on video card for testing purposes.

 

JAFYI: MBs that have integrated video chips rely on system memory for support meaning that if the Ram or the memory slot/s are in some way faulty you will not get any video output.


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