manamaga2512 Posted October 11, 2017 Posted October 11, 2017 Hi all, we have around 3 or 4 machines doing this. Hopefully the link I supplied will work. We have just done a whole IT refresh with these machines. We've tried different monitors, VGA cables, display cables, driver updates, windows updates, BIOS updates. We can't think of anything else to try. I've not noticed any particular pattern as to when or what causes this and the only way is to force shutdown and startup again. At first I thought it was because the machines had been left on all night but, one machine started doing this as a student was just browsing the web. Any guesses? https://drive.google.com/a/samuellister.co.uk/file/d/0BziL0k7lYpnOdFBVcWR4X3dCZTQ/view?usp=sharing Ta very much.
Dos_Box Posted October 11, 2017 Posted October 11, 2017 Does the problem occur on initial boot-up and when you restart does it come back again at all?
manamaga2512 Posted October 11, 2017 Author Posted October 11, 2017 After forcing shutdown it doesn't happen again on reboot, but does happen again later. It could be days later or it could be hours later. Very random and only on 3 or 4 machines (at present)
Dos_Box Posted October 11, 2017 Posted October 11, 2017 After forcing shutdown it doesn't happen again on reboot, but does happen again later. It could be days later or it could be hours later. Very random and only on 3 or 4 machines (at present) When it happens again have the machines been rebooted, also, does this happen every time on the initial boot?
Dos_Box Posted October 11, 2017 Posted October 11, 2017 Interesting, this seems to suggest it could be the LAN cable - https://support.hp.com/gb-en/document/c03648552
manamaga2512 Posted October 11, 2017 Author Posted October 11, 2017 Interesting, this seems to suggest it could be the LAN cable - https://support.hp.com/gb-en/document/c03648552 That does suggest VGA port, but we have removed that from the equation by using the display ports instead, and it still happens :-/
Dos_Box Posted October 11, 2017 Posted October 11, 2017 That does suggest VGA port, but we have removed that from the equation by using the display ports instead, and it still happens :-/ Just to be sure though, have you tried booting with the LAN cable disconnected and away from the computer, or plugging in a known working machine into the same place to see if you get the same symptoms?
manamaga2512 Posted October 11, 2017 Author Posted October 11, 2017 It doesn't happen when machines boot up, at least it's not happened so far. Normally when they have been on for a while. We can try booting without the LAN cable in but we won't see anything different.
Dos_Box Posted October 11, 2017 Posted October 11, 2017 I wonder if it's bad caps (capacitors) have you checked them for bulging?
Tesla Posted October 11, 2017 Posted October 11, 2017 8200s? @ICTDirect_Dave is this an issue you've seen before on them?
ICTDirect_Dave Posted October 11, 2017 Posted October 11, 2017 8200s? @ICTDirect_Dave is this an issue you've seen before on them? It's a little more extreme than what I've seen before. But you can get a similar effect when the onboard graphics are on the way out, and occasionally when there's a bad stick of ram in a machine. I've passed the video to my chief fettler with a request for feedback. I'll let you know what he says
Passat1983ICTech Posted October 11, 2017 Posted October 11, 2017 hi there have you update the drive on the pc have you tried updating the bios as well to me it look like it a vga port has fail I had one on a laptop and did a lot of google and it was the mother board try this first then you can say it is the mother board
ollyyllo Posted October 11, 2017 Posted October 11, 2017 (edited) Is this from the onboard graphics? What chip is it, or what graphics card model? Looks like some models of these Compaq come with Intel HD Graphics 3000 I have some laptops with that chip that do a very similar thing. If you can find the setting 'Display Refresh Rate Switching' and uncheck it, that might work? Edited October 11, 2017 by ollyyllo
Joanne Posted October 11, 2017 Posted October 11, 2017 (edited) I have had a similar issue on a laptop. It's being sent back under warranty. I had tried everything... here is mine.... https://www.dropbox.com/s/o9ti8r2xirpbl3n/VID_20171010_120235.mp4?dl=0 Edited October 11, 2017 by Joanne 1
Passat1983ICTech Posted October 11, 2017 Posted October 11, 2017 try using the other display port on the back and see what that dose
Dos_Box Posted October 11, 2017 Posted October 11, 2017 I have had a similar issue on a laptop. It's being sent back under warranty. I had tried everything... here is mine.... https://www.dropbox.com/s/o9ti8r2xirpbl3n/VID_20171010_120235.mp4?dl=0 [ATTACH=CONFIG]45742[/ATTACH] That would make cool wallpaper for my living room!
Joanne Posted October 11, 2017 Posted October 11, 2017 I enjoyed watching the edge change colours....
eddyc Posted October 11, 2017 Posted October 11, 2017 Hi all, we have around 3 or 4 machines doing this. Hopefully the link I supplied will work. We have just done a whole IT refresh with these machines. We've tried different monitors, VGA cables, display cables, driver updates, windows updates, BIOS updates. We can't think of anything else to try. I've not noticed any particular pattern as to when or what causes this and the only way is to force shutdown and startup again. At first I thought it was because the machines had been left on all night but, one machine started doing this as a student was just browsing the web. Any guesses? https://drive.google.com/a/samuellister.co.uk/file/d/0BziL0k7lYpnOdFBVcWR4X3dCZTQ/view?usp=sharing Ta very much. We’ve had this on a few once they got to 3-4 years old. It was a while ago now but I seem to recall it was ram related. I think swapping between one good and one bad machine the fault would move
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