jmitchellma Posted June 23, 2015 Posted June 23, 2015 Hi guys, please can somebody give me some help if possible? Basically, I power on my PC and the fans come to life and keyboard and mouse lights up but there is the dreaded "No signal" sign on my monitor. I have tried so many different methods of solution as seen online (such as: removing power cable and holding power button for 10 seconds, removing all internal components one by one to determine problem, different PSU, and a few more) and still no sign of life! Please if possible can someone provide some feedback and try and help me out of this sticky situation. Much appreciated and thank you in advance for any advice offered.
simpsonj Posted June 23, 2015 Posted June 23, 2015 Hmm, sounds like your graphics card has died. Is it an inbuilt graphics card (Ie part of the motherboard) or a separate (PCI, PCI-e) one? If it's a standalone card, worth trying to reseat it in the motherboard. If it's integrated, might be worth seeing if you can pick up a cheap one or borrow one from a friend? Also worth trying a different cable if you have another knocking about (VGA or DVI).
hardtailstar Posted June 23, 2015 Posted June 23, 2015 Is it onboard graphics or a separate graphics card? if everything is powering up it sounds like a graphics issue.
LeMarchand Posted June 23, 2015 Posted June 23, 2015 Try a different monitor and/or cable. If you are connected to a graphics card, try removing it and using the onboard connection (if one exists). If you've not already done the above! Also (if not already done) try reseating the RAM. Can you hear the hard drives spinning up (if not SSD)?
Oaktech Posted June 23, 2015 Posted June 23, 2015 I would hazard a guess that you have one or two problems. Have you tried the monitor on another computer to make sure it isn't a fault with the monitor? If that doesn't give you any success, I would suggest that the first thing you do is get hold of a new power supply. without a known good power supply you won't be able to do anything. If that fixes it, which it might, then all is well. Otherwise you are possibly looking at a new motherboard. I don't know how old your machine is or what kind of spec it is, but we are looking at around £100 worth of parts to get to this point unless you can borrow them to try. If you just have a pretty standard machine you might well be better off just getting a replacement machine from someone like @ICTDirect_Dave http://www.ict-direct.co.uk If it's a gaming rig, then you're going to have to take it slow and replace the basic bits until something comes to life. 1
JATSO Posted June 23, 2015 Posted June 23, 2015 Try re-seating the memory modules and swap the on board battery sometimes its simply bad connection. I get this a lot on the old RM Machines that we still have.
jmitchellma Posted June 23, 2015 Author Posted June 23, 2015 Thanks everyone for the replies! And I forgot to mention that the system is an all-in-one system in a school. Because of this, it is an in-built graphics and I have tried a different monitor and still no luck!
jmitchellma Posted June 23, 2015 Author Posted June 23, 2015 P.S. Have also tried reseating the memory
Oaktech Posted June 23, 2015 Posted June 23, 2015 Thanks everyone for the replies! And I forgot to mention that the system is an all-in-one system in a school. Because of this, it is an in-built graphics and I have tried a different monitor and still no luck! Have you got another one you can raid for parts to try and narrow down your issue?
jmitchellma Posted June 23, 2015 Author Posted June 23, 2015 No I'm afraid not! The only other computers of this type we have are all working and in classroom's
difinity Posted June 23, 2015 Posted June 23, 2015 Which all in one is it ? Is the screen working ? have you checked for damaged ports ?
tmcd35 Posted June 23, 2015 Posted June 23, 2015 In order (to try)... Input source on monitor - is it set correctly? Connections - is the VGA/DVI/HDMI cable fully plugged in correctly at both ends? Cable - try another VGA/DVI/HDMI cable incase the one you have has a break Monitor - Find a PC that works, plug this monitor into it, do you get the same problem? Computer - find a PC that works, plug it's monitor into your computer, do you still have the same problem? Graphics Card unseated - open the case and reseat the graphics card - does it need power from the PSU? Graphics card - if possible test in another working computer and or replace with new After that you're in the realms of motherboard or CPU faults. But if it's any component inside the case that's faulty it should beep on POST, unless the isn't powering the system.
Oaktech Posted June 23, 2015 Posted June 23, 2015 No I'm afraid not! The only other computers of this type we have are all working and in classroom's I'm clearly a bit more gung-ho than you... I'd have already nicked a working one, substituted it with whatever I could find for a spare and used the worker for parts to find out what's wrong with the dead one. It can go back working when I'm done troubleshooting and I've ordered spares! 1
JATSO Posted June 23, 2015 Posted June 23, 2015 If its worth your time then use one of them to find the fault it shouldn't take long swapping over the removable component bits into a working one and see if it's a component issue or motherboard issue. If it's not worth time then just write it off and replace.
tmcd35 Posted June 23, 2015 Posted June 23, 2015 Assuming it's not under warranty I'd have canalised a working one for diagnostics. If it's under warranty, especially AiO's, then it's someone else problem!
jmitchellma Posted June 23, 2015 Author Posted June 23, 2015 1. There is only one source available 2. Yes the VGA is fully connected 3. I cannot try a new cable since it is an all-in-one and the cable is inaccessible 4. Tried a separate working monitor and still nothing 5. Again, since its an all-in-one I cant do this 6 and 7. There is no graphics card - just the motherboard with on-built VGA
tmcd35 Posted June 23, 2015 Posted June 23, 2015 Does it POST? you should hear a single beep when you power up. If so how long have you left the machine with the second monitor plugged in?
jmitchellma Posted June 23, 2015 Author Posted June 23, 2015 Thanks guys for all your efforts, however I cannot take another one apart. - - - Updated - - - No beeps when powering up.
jmitchellma Posted June 23, 2015 Author Posted June 23, 2015 Its an RM ascend 2020B AIO with an ASUS P8H67-M-EVO motherboard.
hardtailstar Posted June 23, 2015 Posted June 23, 2015 Does it have any usb sticks/HDDs attached to it? Ive had a couple of issues with those causing issues on booting up even if its only set to boot from the internal HDD
LiamH Posted June 23, 2015 Posted June 23, 2015 (edited) Thanks guys for all your efforts, however I cannot take another one apart. - - - Updated - - - No beeps when powering up. If you remove the RAM and boot it do you get it beeping at you? Normally it checks the RAM first, if you cant get it to complain with those missing its most likely a motherboard/CPU issue. Edited June 23, 2015 by LiamH
difinity Posted June 23, 2015 Posted June 23, 2015 Ideally the motherboard should be removed from the case, all ports checked for damage and then tested on a bench with a known working cpu/heatsink&fan , psu, stick of memory connected to a known working monitor. I've encountered PCs that won't boot due to a lost screw shorting between the motherboard and case, damaged ports and faulty hard drives. If there still isn't a picture it's cpu or motherboard.
tmcd35 Posted June 24, 2015 Posted June 24, 2015 No beeps when powering up. If there's no beeps when powering up then either the internal speaker is faulty or, more likely, there's a deeper fault in either the PSU, motherboard, or BIOS. Personally I'd send it away to a specialist to repair and wait for them to supply an obituary.
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