Random freezing on network and some machines, black screen and no video

It's been since march, i have an office that was running perfectly before we renovated.  Now we are having nothing but random freezing issues and machines locking up while they sit. only thing extra we had put in the server room is  a sonos system for music and a air duct to get hot air out and a thermostat.

 

I am the network admin trying to narrow down issue. You come to the machine, its on and has power, by moving the mouse and hitting keyboard no video will display. No key seq like crtl alt delete with work.  After one froze and i was there I hooked up another keyboard, mouse(usb), and new monitor, all new dell vostro's. still nothing.  funny part is it is NOT a pc issue.  I brought them back to my shop and they ran for a week with no issues here just sitting on the desktop, video came back fine every time. It has to be something in that environment?  Some pc's are fine and others are having nothing but issues.  I even put new temp pc's in their place and the temp pc's have issues (same issues) while they are in that environment but not if they run at our shop?? All computers have avg business edition 2012 or 2013.

 

All they do is rdp into our ts and run 1 program, the sessions always stay up but the application which depends on sql may freeze, or really mean hang. in the mean time i had made up a batch file that i wanted them to run while they were waiting for the application to respond at the main location where the server is and 99% of the time response is 1ms.  we have allocated 40gb to the sql server and 18gb to the ts for about 60 users total in all  3 locations. I and the other company that we use for software has gone over server, memory, paging, resource monitor etc and cant find anything?

More troubleshooting- we checked(cable tested) and labeled every wire in main location and made sure it was dhcp unless a needed static and we get no ip conflict errors on any machine.

one of my techs is there right now and at least 3 machines have black screen, machine is physically on, hard drive spinning but no video.  mouse and keyboard have power but machine does not respond.  we have remote on these machines but at the same time it shows offline and we cannot connect to them.

Sometimes the machine freeze in their remote desktop session also?
these were found on our terminal server logs-  Information,9/21/2013 1:20:53 PM,Desktop Window Manager,9003,None,The Desktop Window Manager was unable to start because a composited theme is not in use

a.       Desktop Windows Manager not starting can be a cause for remote session issue, such as locked display. Please check following article http://support.microsoft.com/kb/2592687

2.       Error 9009: The Desktop Window Manager has exited with code (0x40010004)

a.       This error was address in XenApp by increasing delay for the logoff checker: http://support.citrix.com/article/CTX127883, you might want to consult Microsoft what for resolution in Terminal Services.

3.       Error,7/23/2013 3:05:20 PM,TermDD,56,None,The Terminal Server security layer detected an error in the protocol stream and has disconnected the client. Client IP: 192.168.39.205.
 

please help and be explain as much as you can. i don't know what else to look for.
bowlerman25Asked:
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Dan CraciunIT ConsultantCommented:
Do you have the machines plugged in UPS's? If so, do the UPS have over/undercharge protection?
Looks like a fluctuating power issue. Had something similar on a client, switched the old UPS with new APCs, problem mostly solved (2 computers still exhibited the problem, sent them to service and they replaced the MB).

HTH,
Dan
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bowlerman25Author Commented:
yes we plugged 9 of them into ups's 550va by apc but not all of them.  a couple that are plugged into ups are still freezing.
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convergintCommented:
We've run into this almost exact same situation before and what DanCraciun suggested is spot on and that is exactly what we tried too.  However, we discovered that at our site, the power was so bad that the UPS couldn't compensate enough and our server still locked up constantly.

UPS's have a range of power that they can work with and in our case it fell out of the range.  I think our voltage was actually 90V or something stupid low like that.  It took one of our techs to actually meter out the power outlet to prove it.
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bowlerman25Author Commented:
wow that is great. i will check it out. what the min voltage i should have?  should i check the outlet or what coming out of power cords?

also we have fixed the freezing issue by updating bios on the server which had to do with a virtualzation issue. also updating the the virtual hard disk driver for xenserver helped.
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convergintCommented:
It would depend on the range of acceptable voltage of the UPS.  Some can handle down to 80V some only to 100V.

Now that you have updated the bios, nothing is freezing anymore?
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bowlerman25Author Commented:
the rdp's session have stopped bringing up messages that says they are closing the application and have stopped freezing.  The issue with the computers that if they leave computer on and come back to it, all the power is on but nothing responds.  no video and no picture.  have to push power button to shutoff and then turn machine back on. not all machines do it but its been something i cannot figure out?
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bowlerman25Author Commented:
i went today and checked the voltage at different outlets in the office, all throughout office was 119v and up except the server room.  with everything all plugged in, i checked the main outlets and they gave about 114-115v, would that be enough to make a problem?

also it seems to be just this location. the other 2 locations dont have this issue and this issue is only after we had it renovated??
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convergintCommented:
That voltage is well within acceptable range.  However, you can not tell if it is keeping that at all times.  You mentioned you have some UPS units, do they have monitoring and environmental logs available?  If they do, you could look at them to see if the power and other variables are stable throughout the day and night.

This may be a silly question but do these computers have any kind of sleep, standby or power saving modes turned on, both in the OS and BIOS?

Also, do you have the power saving mode to turn off the monitor after X minutes on?  If so, maybe turn that off.
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bowlerman25Author Commented:
i have put powerchute on 4 different computers and set to alarm  and log.  i don't know if that software is good enough but i was starting that?

yes all sleep and power management is off in windows but didn't check bios. good idea.

no power saving for monitor is on
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bowlerman25Author Commented:
the main issue is when they leave their computers on overnight when they come in the morning.  they have no video. moving mouse or hitting keys on keyboard does not allow screen to display but the tower unit is on and has power???  I have narrowed it down to just computers at this certain location whether or not they have a apc 550va ups.  im thinking its a power issue but how do i prove it?
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Gerald ConnollyCommented:
Remember power is not just about voltage, its about quality, there is sag and surge and other transients, and also the shape of the AC waveform.

The only way to check is a proper power monitor
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bowlerman25Author Commented:
what do i use for a power monitor?  do i have to hire an electrical engineer?
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Gerald ConnollyCommented:
Well?

This is probably a bit OTT but something like this would do the job http://en-us.fluke.com/products/power-quality-tools/fluke-1750-power-quality.html

Other brands do exist
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bowlerman25Author Commented:
should i get an electrical engineer?
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Gerald ConnollyCommented:
I think i would hire a power quality monitor first to prove i had a problem and then consider consulting an expert depending on the reults
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bowlerman25Author Commented:
where or who do i call for this?
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bowlerman25Author Commented:
we have narrowed it down, if the network cable is plugged into the computers, they freeze and lockup up over night causing no video in the morning. so i tested leaving the network cord out and the machines running over night, they were still on and working perfectly!  any suggestions as why this is happening?
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Seth SimmonsSr. Systems AdministratorCommented:
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
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